3
|
Complete the sentences according to the text.
1. All the plastic ends in ★★★.
2. Air is not clean because ★★★. 3. People can ★★★, ★★★, and ★★★ to help the planet. 4. The best example to reduce is ★★★. 5. The best example to reuse is ★★★. 6. The best example to recycle is ★★★. |
4
|
Read the definitions and find the words in the comments in Task 2.
1.
carefully planned work - ★★★
2. a group of people born and living during the same time - ★★★ 3. people who know a lot about the subject - ★★★ 4. transport for everyone - ★★★ |
must
|
have to /
has to |
don't have to /
doesn't have to |
is used when the speaker decides what is necessary to do. I must buy
some sweets. (I say so. I decide what to do.)
|
is used when the necessity comes from outside the speaker, or when
others decide for the speaker what is necessary to do. We have to wear
school uniforms. (The rules say so.)
|
You can do something, but you don't need to do it. Today is a holiday.
You don't have to go to school.
|
We must do something now to save our planet
Earth!
|
My parents have to be at work early in the
morning.
|
We don't have to wait.
|
5
|
Read the comments in Task 2 and find other examples with must, have to, and
don’t have to.
|