Basics. Verb Forms: Be/Have/Do and Regular/Irregular Verbs.: correct answers
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Explanation and examples
Verb forms are the different ways verbs change to show tense, voice, mood, or other grammatical features. In English, there are regular and irregular verbs.
- Regular verbs: These verbs follow a consistent pattern when changing forms, usually by adding -ed for past simple and past participle forms.
- Irregular verbs: These verbs have unique forms for past simple and past participle that do not follow the regular pattern.
The verbs "be," "have," and "do" are essential because they are used as auxiliary verbs and have irregular forms in the past tense.
Regular and irregular verb forms
Regular verbs follow a pattern when forming their past simple and past participle forms, usually by adding -ed.
Example:
| Base Form | Past Simple | Past Participle |
|---|---|---|
| work | worked | worked |
Irregular verbs have unique forms for past simple and past participle that do not follow the regular pattern.
Examples:
| Base Form | Past Simple | Past Participle |
|---|---|---|
| be | was/were | been |
| have | had | had |
| do | did | done |
Common irregular verbs
Here is a table of some common irregular verbs with their past simple and past participle forms:
| Base Form | Past Simple | Past Participle |
|---|---|---|
| go | went | gone |
| write | wrote | written |
| sing | sang | sung |
| swim | swam | swum |
| bring | brought | brought |
| buy | bought | bought |
| catch | caught | caught |
| come | came | come |
Correct answers
Question 1
The original sentence requires the past perfect tense, which is formed using the auxiliary verb "had" followed by the past participle of the main verb. The verb "to write" is an irregular verb, and its past participle form is "written." So, the correct answer is "He had written a letter by the time we arrived."
Question 2
The original sentence requires the past simple tense. For regular verbs, the simple past form is created by adding "-ed" to the base form of the verb. In this case, the base form is "work," and the past simple form is "worked." So, the correct answer is "she worked in her office."
Question 3
The original sentence requires the past perfect tense, which is formed using the auxiliary verb "had" followed by the past participle of the main verb. For regular verbs, the past participle is the same as the simple past form, created by adding "-ed" to the base form.
Question 4
The present passive voice is formed using the auxiliary verb "am," "is," or "are" followed by the past participle of the main verb. In this case, the subject is "dinner," which requires "is" as the auxiliary verb, and the past participle of "to cook" is "cooked." So, the correct answer is "is cooked."
Question 5
The past continuous tense is formed using the auxiliary verb "was" or "were" followed by the present participle (-ing form) of the main verb. In this case, the subject is "she
Question 6
The correct answer is are swimming.
Look! and right now show an action happening at this moment, so we use the present continuous: am/is/are + verb-ing. The children is plural, so we need are, not is.
Swim (present simple) and swam (past simple) don't describe an action in progress now.
Question 7
The original sentence requires the past simple tense for the first blank and the present perfect tense for the second blank. The verb "to eat" is an irregular verb. Its simple past form is "ate," and its past participle form is "eaten." So, the correct answer is "They ate dinner last night, but they have eaten breakfast yet today."
Question 8
The past passive voice is formed using the auxiliary verb "was" or "were" followed by the past participle of the main verb. In this case, the subject is "the house," which requires "was" as the auxiliary verb, and the past participle of "to clean" is "cleaned." So, the correct answer is "was cleaned."
Question 9
The present perfect tense is formed using the auxiliary verb "have" or "has" followed by the past participle of the main verb. In this case, the subject is "they," which requires "have" as the auxiliary verb, and the past participle of "to visit" is "visited." So, the correct answer is "have visited."
Question 10
Choose the correct question form for the following sentence.
"They went to the movies last night."
Answers:
The original sentence is in the past simple tense. To form a question in the past simple tense, use the auxiliary verb "did" followed by the subject and the base form of the verb. In this case, the subject is "they," and the base form of "to go" is "go." So, the correct question form is "Did they go to the movies last night?"
Question 11
The original sentence requires the past simple tense. The verb "to read" is an irregular verb, and its simple past form is the same as the base form, which is "read." So, the correct answer is "She read a book last night."
Question 12
Choose the correct negative form for the following sentence.
"He plays basketball every weekend."
Answers:
The original sentence is in the present simple tense. To form a negative sentence in the present simple tense, use the auxiliary verb "do" or "does" followed by "not" (contracted to "doesn't" for third person singular) and the base form of the verb. In this case, the correct answer is "He doesn't play basketball every weekend."