III. Fill in the questing tag (выберите правильную форму разделительного вопроса) 1. Solar power can be used to heat homes, ....? a) can't it? b) can't she? c) can it? 2. You have been a fan of Harry Potter since 2001, ...? a) don't you? b) aren't you? c) haven't you? 3. We are listening a great soundtrack to the Matrix, ....? a) are we? b) aren't we? c) aren't you? 4. They often play basketball, ....? a) do they? b) are they? c) don't they? 5. You can join an environmental organization, ....?

Forming Tag Questions

Tag questions are short questions added to the end of a statement to confirm information or seek agreement. The tag question uses the same auxiliary or modal verb as the main clause, but in the opposite polarity (positive statement takes a negative tag, and a negative statement takes a positive tag). The pronoun in the tag must agree with the subject of the main clause.

1. Solar power can be used to heat homes, ....?

• The main clause is 'Solar power can be used...', which is positive. The auxiliary verb is 'can'. The subject is 'Solar power', which is a thing and should be replaced by 'it'. Therefore, the tag should be negative: 'can't it?'.
• a) can't it?

2. You have been a fan of Harry Potter since 2001, ...?

• The main clause is 'You have been a fan...', which uses the present perfect tense. The auxiliary verb is 'have'. The subject is 'You'. Therefore, the tag should be negative: 'haven't you?'.
• c) haven't you?

3. We are listening a great soundtrack to the Matrix, ....?

• The main clause is 'We are listening...', which is in the present continuous tense. The auxiliary verb is 'are'. The subject is 'We'. Therefore, the tag should be negative: 'aren't we?'.
• b) aren't we?

4. They often play basketball, ....?

• The main clause is 'They often play...', which is in the simple present tense. Since there is no auxiliary verb, we use 'do/does'. The subject is 'They', so we use 'do'. The statement is positive, so the tag should be negative: 'don't they?'.
• c) don't they?

5. You can join an environmental organization, ....?

• The main clause is 'You can join...', which uses the modal verb 'can'. The subject is 'You'. The statement is positive, so the tag should be negative: 'can't you?'.
• c) can't you?