RULES TO ADD QUESTION TAGS TO IRREGULAR VERBS:

A) Question tags follow helping (auxiliary) verbs, not the main verb type (regular or irregular).

B) So even if a verb is irregular, the tag depends on the tense and helping verb used.

C) We have to read the sentence and correctly identify the invisible helping verb.

D) Always add a comma before the tag, and end the sentence with a question mark.

SENTENCE 1:
He ate your lunch, didn't he?
(Add a question tag)

ANSWER IS:
He ate your lunch, didn't he?

RULES:
For positive sentence, negative question tag is used. ATE is irregular verb, so, question tag is based on the auxiliary verb DID (past tense).

SENTENCE 2:
She wrote a letter.
(Add a question tag)

ANSWER IS:
She wrote a letter, didn't she?

RULES:
For positive sentence, negative question tag is used. WROTE is irregular verb, so, question tag is based on the auxiliary verb DID (past tense).

SENTENCE 3:
They went home early.
(Add a question tag)

ANSWER IS:
They went home early, didn't they?

RULES:
For positive sentence, negative question tag is used. WENT is irregular verb, so, question tag is based on the auxiliary verb DID (past tense).

SENTENCE 4:
You drank all the juice.
(Add a question tag)

ANSWER IS:
You drank all the juice, didn't you?

RULES:
For positive sentence, negative question tag is used. DRANK is irregular verb, question tag is based on the auxiliary verb DID (past tense).

SENTENCE 5:
He broke the glass.
(Add a question tag)

ANSWER IS:
He broke the glass, didn't he?

RULES:
For positive sentence, negative question tag is used. BROKE is irregular verb, so, question tag is based on the auxiliary verb DID (past tense).

SENTENCE 6:
She has spoken to him.
(Add a question tag)

ANSWER IS:
She has spoken to him, hasn't she?

RULES:
For positive sentence, negative question tag is used. Sentence is in present perfect tense. HAS is used to form the question tag.

SENTENCE 7:
They have done the work.
(Add a question tag)

ANSWER IS:
They have done the work, haven't they?

RULES:
For positive sentence, negative question tag is used. Sentence is in present perfect tense. HAVE is used to form the question tag.

SENTENCE 8:
He has taken my pen.
(Add a question tag)

ANSWER IS:
He has taken my pen, hasn't he?

RULES:
For positive sentence, negative question tag is used. Sentence is in present perfect tense. HAS is used to form the question tag.

SENTENCE 9:
You had seen the film before.
(Add a question tag)

ANSWER IS:
You had seen the film before, hadn't you?

RULES:
For positive sentence, negative question tag is used. Sentence is in past perfect tense. HAD is used to form the question tag.

SENTENCE 10:
She had gone to the market.
(Add a question tag)

ANSWER IS:
She had gone to the market, hadn't she?

RULES:
For positive sentence, negative question tag is used. Sentence is in past perfect tense. HAD is used to form the question tag.