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(   ) 2. Don't be afraid of       mistakes when you speak English.

   A. taking   B. doing

   C. making   D. offering

(   ) 1. - I       it out in this way,but I failed.

―Why      it in another way?

   A. tried to work;not try doing

   B. tried to work;not try to do

   C. tried working;not try to do

   D. try to work;not try doing

(   ) 4. —What about        a rest?

―OK. Let's go out and have a walk.

   A. to take   B. takes

   C. taking   D. to taking

(   ) 3. ―I feel really tired.

--      

   A. Lucky you！

   B. You'd better work harder.

   C. Congratulations!

   D. Why not go and have a rest?

(   ) 2. -―I don't know how to pronounce the word "medium".

―       ask Mr Taylor for help?

   A. What about   B. Let's   C. How about   D. Why not

(   ) 1. Let's       for a walk,shall we?

   A. to go   B. going

   C. go   D. gone

4. You should (not) do sth.意為"你(不) 應(yīng)該做某事"。 should為情態(tài)動(dòng)詞，后接動(dòng)詞原形。如- You should take more exercise. 你應(yīng)該加強(qiáng)鍛煉。

3.         意為"做某事是一個(gè)好主意"。 h作形式主語，句子的真正主語是動(dòng)詞不定式。如： It's a good idea to send a birthday card to him. 給他寄一張生日賀卡是一個(gè)好主意。

2. Why don't you do sth.？意為"為什么不做某事呢？"，相當(dāng)于      。如： Why don't you write them down? =      write them down? 

為何不把它們記下來呢？

1.         意為"做某事怎么樣？"。 about 為介詞，后接動(dòng)詞時(shí)用其動(dòng)名詞形式。如： How about going for a picnic at the weekend? =       going for a picnic at the weekend?

這周末去野餐怎么樣？