Planet Earth(cas8)

What are the most endangered species on Earth?

How can people be environmentally friendly?

What can you change in your own behaviour?

Open your books to page 57, Stuart Heath's questions are missing from the text. read the text and write A, B, or C in the boxes.

On Page 58 do the Vocabulary exercises 1 and 2.

CONDITIONALS

Zero Conditional

If we heat ice, it melts.

The zero conditional is used to make statements about the real world, and often refers to general truths, such as scientific facts.

First Conditional

If Peter works hard,he will pass all his exams.

The first conditional is used to express a possible condition and a possible result in the future.

Modal Verbs

Modal verbs are followed by a bare infinitive(infinitive without to). The subject and the modal verbs change position to form questions and negatives are formed by adding not.

CAN

This modal verb is used:

a) to express general ability in the present (Sadie can swim.)

b)to express possibility in the future (It can rain tonight.)

c)to express permission/prohibition (Can I go to Sam's party, mom?/ You cannot bring dogs in school.)

COULD

This modal verb is used:

a) to express general ability in the past (I could swim when I was 5.)

b) in polite questions and request (Could you pass me the pen, please?)

c)to express weak possibility in the future (It could snow next week.)

In your books do the Grammar exercises 1 and 2 on page 58 and 59.