Match the beginnings of the sentences (1-10) with their endings (a-j 1) global warming means that 2) heavy traffic and exhaust fumes 3) the emissions produced by factories 4) the pesticides used on crops in the countryside 5) heavy rain and rising water levels in rivers 6) most households produce large amounts of waste 7) the ozone layer 8) large amounts of radiation 9) if you recycle things that have already been used 10) i prefer organic food because a) pollute the air in most cities. b) which is taken to landfill sites. c) have caused serious flooding. d) create acid rain which destroys crops. e) the weather is becoming hotter and drier. f) are dangerous to birds and other wildlife. g) you process them so that they can be used again. h) protects living things from the harmful radiation of the sun. i) can cause illness and death. j) it is produced without artificial chemicals or pesticides.

упражнение 2.

(как известно have to мы можем поставить на или будущее время, помимо настоящего, в то время, как с must мы этого сделать не модем; кроме того, ещё отличительное различие have to от must в том, что have to - личное побуждение, ты сам считаешь, что это сделать - твой долг, в то время, как must - ты должен что-то сделать из-за внешних обстоятельств.) после теории перейдём к упражнеинию:

Brilliant! I have to study tonight because I've finished my exams.

You must not use a mobile phone on a plane.

You can go out, but you must be home by midnight.

Jo haven't to go to school by bus. She lives nearby.

We mustn't cook tonight. We can get a pizza.

She haven't to get up early. She's on holiday.

You must study harder or you are going to fail.

You must not drive faster than 120 km/h on the motorway.

Упражнение 3.

(для начала необходимо понять отличие модальных глаголов. О must и have to говорится выше. Теперь разберёмся с остальными... Итак, ought to выражает совет, рекомендацию, вероятность чего-либо, также он используется, чтобы с о совете, однако но мягче, чем must. Should используется для выражения обычного совета (тебе стоит...), он мягче чем ought to. Can, may, able to говорят о возможностях. Can используется, когда мы говорим о физическом навыке. May употребляется, чтобы с разрешение или дать его, выдвинуть предположение. Able tо употребляется, чтобы показать возможность действия, поступка, обусловлено внешними обстоятельствами время от may. Need - используется для выражения необходимости.

I can’t go out tonight. I'm too busy.

I haven't studied enough. I may not pass my exams.

They say it must snow tomorrow.

She won’t be able to help us. She's not available.

Can you come to my party?

We should run or we can miss the bus.

1.

1)Did Mr Brown take his wife to the theatre yesterday?

Mr Brown didn't take his wife to the theatre yesterday.

2)Does John know a lot about Great Britain?

John doesn't khow a lot about Great Britain.

3)Has Mrs Cook bought a new dress?

Mrs Cook hasn't bought a new dress.

4)Has Mary been waiting for her friend for 30 minutes.

2.

Who made out the bill for Mrs Cook?

What did shop-assistant make out for Mrs.Cook?

Whom did shop-assistant make out the bill for?

Did shop-assistant make out the bill for Mrs. Cook?

Did shop-assistant make out the bill for Mr Brown or for Mrs. Cook?

3.

1) Ann sings in the neighbour room.She always sings very good.She has been learning to sing for 3 year.

2)What are you writting?- i am writting a letter for my sister.Now she works.She has been works for 2 years.

3)What do you usually do in the evening?-I usually do lessons,read,watch TV.Now i am reading a newspaper.I have been reading for 15 minutes.

Объяснение: