(3)疑问句：___________________+主语+动词原形

3).时间状语：___________, ________week/month/year,

______ the future，______+一段时间等。

3. 仔细观察例句，体会并总结蓝色部分的时态结构，并翻译红色部分。

结构：there will be 意思是___________________________

fewer+__________ less+___________ more+____________

Step 5:Work on 3a.

1.Tell Ss read the conversation in 3a and try to fill in the blanks with more ,less or fewer.

2.Methods

3.check the answers

4.Let Ss read the sentences and try to remember the sentences.

Step 6:Work on 3b:complete the predictions.

1.Let Ss read the beginning of the sentences, understand each sentence.

2.Let Ss complete the sentences.

3.Let Ss share the answers ,and find and correct errors.

4.Let some Ss talk about their sentences.

Step 7 A game.

All of us want to have a good environment. Everyone should play a part in saving the earth. What will you do to protect(保护)it?

Step 8 Summarize and do some exercises.