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be (= am/is/are/was/were) 十 -ing (cleaning/working etc.)

「 /
am11s;are + -1ng 0 Please be quiet. I'm working.
(present continuous) 0 It isn't raining at the moment.

0 What are you doing this evening?
➔ Units 3-4 and 25

I
was;were 十 -1ng 0 I was working when she arrived.
(past continuous) 0 It wasn't raining, so we didn1t need an umbrella.

0 What were you doing at 3 o'clock?
➔ Unit 13

be + past participle (cleaned/made/eaten etc.)

am/is/are + past participle 0 I' I'm never invited to parties.

(passive present simple) 0 Butter is made from milk.

。 These offices aren't cleaned every day.
➔ Unit 21

was/were + past participle 。 The office was cleaned yesterday.

(passive past simple) 。 These houses were built 100 years ago.

O 日 ow was the window broken?
➔ Unit 21
0 Where were you born?

have/has + past participle (cleaned/lost/eaten/been etc.)

have/has + past participle 0 I've cleaned my room.

(present perfect) 0 Tom has lost his passport.

0 Kate hasn't been to Canada.
➔ Units 15-18
0 Where have Paul and Emma gone?

do/does/did + infinitive (clean/like/eat/go etc.)

do/does + infinitive 0 I like coffee, but I don't like tea.

(present simple negative 0 Chris doesn't go out very often.

and questions) 0 What do you usually do at weekends?

0 Does Sam live alone?
➔ Units 6-7

did + infinitive 0 I didn't watch TV yesterday.

(past simple negative and 0 It didn't rain last week.

questions) 0 What time did Paul and Emma go out?

➔ Unit 12

)

56 ( irregular verbs ➔ Unit 24, Appendix 2-3