Verb Tense and Aspect

American Diploma › Digital SAT Reading and Writing — Complete Course

Every verb tells the reader when an action happens. On the Digital SAT, tense questions give you four forms of the same verb — *discovered, has discovered, had discovered, will discover* — and only one fits the time the passage describes. The answer is never a matter of taste: the passage always contains a clue (a date, a time word, or the tense of the other verbs). This lesson teaches you to find that clue in seconds.

What this question type tests

These questions belong to Standard English Conventions, which is about 26% of the scored Reading and Writing questions (about 11–15 questions across the two modules). Inside that domain, the official skill group Form, Structure, and Sense covers verb tense and aspect, along with agreement and verb finiteness. Convention questions usually come in the later part of each module, after Information and Ideas.

The stem is: "Which choice completes the text so that it conforms to the conventions of Standard English?" You know it is a tense question when all four choices are the same verb in different times or aspects, for example: *grew / has grown / had grown / grows* or *completed / will have completed / had completed / have completed*.

If the choices mix finite verbs with -ing or to-forms (*attracts / attracting / to attract*), check finiteness first (see the lesson Finite Verbs). If they differ in -s or is/are, check agreement first. Tense comes after those checks.

Tense and aspect: the forms you need

Tense is the time: past, present or future. Aspect adds how the action is seen: simple (a fact or a complete action), progressive (in progress: be + -ing) or perfect (complete before a certain point: have + past participle).

Passive verbs follow the same pattern: *is built, was built, has been built, had been built, will have been built*. Choose the time first; the passive form simply goes with it.

How to choose the tense: three clues

1. Time words. The strongest clue. Learn the table below by heart.
2. The other verbs in the passage. If the passage tells a past story, stay in the past unless a time word moves you. If it states facts or describes a study or a book, the present is normal.
3. The order of events. Two past events in one sentence or passage? The one that happened first may need *had* + past participle.

Present perfect vs simple past

This is the most tested pair. Both talk about the past; the difference is the connection to now.

• Simple past = the action is finished and placed at a past time (a date, *ago*, *last*, *in the 1960s*). ✓ "The museum opened in 2002." ✗ "The museum has opened in 2002."
• Present perfect = a period that reaches the present, or a past action with no stated time whose result matters now. ✓ "Since 2002, the museum has welcomed millions of visitors." ✗ "Since 2002, the museum welcomed millions of visitors."
• Two clues together: "The fair began in 1969. Since then, it has grown …" — the first sentence uses the past (a date), the second the present perfect (*since then*).

Past perfect: the earlier of two past actions

Use *had* + past participle only when there is a second, later past moment in the sentence or nearby. It says: this was already complete before that.

• ✓ By the time the firefighters arrived, the fire had spread to the roof. (spread first, arrived later)
• ✓ The explorers discovered that another team had reached the spring weeks earlier.
• ✗ In 1922, Howard Carter had discovered the tomb of Tutankhamun. → one past event at a stated time: ✓ discovered.
• Words like *already*, *earlier*, *before* and *by the time* inside a past story are strong signals for *had*.

Progressive forms: actions in progress

• Past progressive (was/were + -ing) is the background action that was happening when a shorter action interrupted it: "The engineer was inspecting the cables when she noticed a crack."
• Present progressive (is/are + -ing) is for an action happening now or around now: "Conservators are restoring the boat at present."
• State verbs (know, believe, belong, contain, own, seem, prefer, consist) are normally not used in the progressive: ✓ "The box contains papyri." ✗ "The box is containing papyri."

Future, future perfect and "would"

• will + verb: simply later than now. "The line will open next year."
• will have + past participle: complete before a future point, usually with *by*: "By the end of 2028, workers will have completed all twelve stations."
• would = the future seen from the past (after a past verb such as *said, predicted, believed*): "In 1960, engineers predicted that the dam would protect the valley from floods." Not ✗ "predicted that the dam will protect" when the whole story is in the past.

Consistency: follow the passage

When there is no time word, the tense of the surrounding sentences decides. Do not change tense without a reason.

• Past story → stay in the past: "She stood on the Corniche, and every few minutes she turned to watch the waves." ✗ "… she turns to watch …"
• General facts → present: "Camels can go days without water. When a camel reaches a well, it can drink up to 100 liters."
• Literary and research present: what a book, author, poem, study or chart says or shows is usually in the present: "In the novel, the narrator remembers her childhood." But events *inside* the story can be past: "Every evening, they sat on the roof." Follow the tense the passage itself uses.

The method for test day

1. Read the choices. Same verb, different times? It is a tense question. (Check finiteness and agreement first if those differ too.)
2. Circle the time clue: a date, since/for/so far, by the time, when/while, currently, by + future date.
3. No time word? Look at the tense of the other verbs in the sentence and the sentences around it.
4. Two past events? Put the earlier one in *had* + past participle — only if there really is a later one.
5. Read the whole sentence with your answer. It should sound like one clear timeline.

Worked examples

Worked example 1: by the time → past perfect

Passage: "By the time the Aswan High Dam was completed in 1970, engineers and archaeologists ______ the temples of Abu Simbel to higher ground, saving them from the rising waters of Lake Nasser."

Question: Which choice completes the text so that it conforms to the conventions of Standard English?

• A) moved
• B) have moved
• C) had moved
• D) will have moved

Answer: C) had moved. "By the time" + a past event (the dam was completed in 1970) tells you the moving was already complete before that past moment. The earlier of two past actions takes the past perfect: "had moved".

• A) moved — The simple past does not show that the move was finished before 1970; with "by the time" + past, the past perfect is expected.
• B) have moved — The present perfect connects to now, but the passage is about a finished past period ending in 1970.
• D) will have moved — The future perfect is for a future point, not for 1970.

Worked example 2: since → present perfect

Passage: "The Cairo International Book Fair first opened in 1969. Since then, the event ______ into one of the largest book fairs in the Arab world, attracting many publishers and readers every year."

Question: Which choice completes the text so that it conforms to the conventions of Standard English?

• A) grew
• B) has grown
• C) had grown
• D) grows

Answer: B) has grown. "Since then" describes a period from 1969 up to now, and the fair still happens "every year". That is the present perfect: "has grown". Notice that the first sentence correctly uses the simple past with its date ("opened in 1969").

• A) grew — The simple past is for a finished action at a stated time; it does not fit "since".
• C) had grown — The past perfect needs a later past moment; this period continues into the present.
• D) grows — The simple present does not show growth over a period that started in 1969.

Worked example 3: one past time → simple past (the "had" trap)

Passage: "After years of searching in the Valley of the Kings, the British archaeologist Howard Carter ______ the entrance to the tomb of Tutankhamun in November 1922. The tomb's contents took nearly ten years to record and remove."

Question: Which choice completes the text so that it conforms to the conventions of Standard English?

• A) had discovered
• B) discovered
• C) has discovered
• D) was discovering

Answer: B) discovered. There is one past event at a stated time ("in November 1922"), and the next sentence continues in the simple past ("took"). The simple past "discovered" is correct.

• A) had discovered — There is no later past moment to compare with, so the past perfect has no reason to be there.
• C) has discovered — The present perfect cannot be used with a stated past date such as "in November 1922".
• D) was discovering — The progressive shows an action in progress, but discovering the entrance is a single, complete event.

Worked example 4: literary present

Passage: "In the short story "The Boat," the author ______ an old fisherman in Rashid who refuses to sell his wooden boat to a developer. The story shows how the fisherman's stubbornness slowly earns the respect of his sons."

Question: Which choice completes the text so that it conforms to the conventions of Standard English?

• A) described
• B) had described
• C) describes
• D) will describe

Answer: C) describes. The passage talks about what the story does, and the next sentence uses the present ("The story shows"). Describing what an author or text does takes the present tense: "describes". (The story and author are invented for this example.)

• A) described — The simple past breaks the present tense that the passage uses for what the story does ("shows").
• B) had described — The past perfect needs an earlier-past relationship; there is none.
• D) will describe — The future makes no sense: the story already exists.

Practice

Ten original questions in Digital SAT format. Circle the time clue in each passage before you choose.

All pages in this course

Start here

• The Digital SAT: Complete Overview
• Time Strategy and How to Attack Every Question

Craft and Structure

• Words in Context
• High-Value Vocabulary for SAT Reading and Writing
• Text Structure and Purpose
• Cross-Text Connections

Information and Ideas

• Central Ideas and Details
• Command of Evidence: Textual
• Command of Evidence: Quantitative
• Inferences

Standard English Conventions

• Sentence Boundaries
• Extra Information: Commas, Dashes and Brackets in Pairs
• Commas: Introductions, Lists, Adjectives — and When NOT to Use One
• Semicolons: Joining Two Complete Sentences
• Colons: After a Complete Sentence
• Dashes — and Choosing Between , ; : —
• Subject–Verb Agreement
• Pronoun–Antecedent Agreement, Clarity and Consistency
• Pronoun Case and Sound-Alike Pronouns
• Verb Tense and Aspect
• Verb Finiteness: Gerunds, Participles and Infinitives
• Dangling and Misplaced Modifiers
• Parallel Structure
• Faulty and Logical Comparisons
• Plurals and Possessives

Expression of Ideas

• Transitions
• Rhetorical Synthesis (Student Notes)

Full practice tests

• Digital SAT Reading and Writing — Practice Test 1
• Digital SAT Reading and Writing — Practice Test 2
• Digital SAT Reading and Writing — Practice Test 3