Study the following positive statements:
You were a sophomore, weren't you?
You are a junior, aren't you?
He is a student, isn't he?
He was a student, wasn't he?
They are present, aren't they?
They were present, weren't they?
They will go, won't they?
He studies well, doesn't he?
They study well, doesn't they?
They study well, don't they?
They studied well, don't they?
They studied well, didn't they?
Then compare them with these negative statements:
You're not a junior, are you?
You weren't a sophomore were you?
He's not a student, is he?
He wasn't a student, was he?
They aren't present, were they?
They weren't present, were they?
They won't go, will they?
He doesn't study well, does he?
They don't study well, do they?
He did not study well, did he?
The tag question is in its negative form when the first part od the sentence is positive; it is in the positive form when the first part of the sentence is negative.
If the verb in the first part of the sentence is a form of the verb to be, the tag question repeats the verb.
If the verb in the first part of the sentence is not a form of the verb to be in the present tense, the tag question uses the verb does (singular) or do (plural).
If the verb in the first part of the sentence is any other verb in the past tense, the tag question uses the verb did.
When the sentence with the tag question is in the present perfect or past perfect tense, the verb in the tag question repeats the has, have, or had used in the first part of the sentence.
When the first part of the sentence uses can, could, may, might, will/would, or should, the tag question repeats these verbs.
Examples:
a. They have seen you, haven't they?
b. They had seen you, hadn't they?
c. He has lost a book, hasn't he?
d. They can do it, can't they?
e. She could walk, couldn't she?
Next lesson 》Kind of Sentences | Lesson 4 》
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