1. dangerous危险的,  run along延伸,走开,  cover the top覆盖顶部,  include包含,  take in吸收,  succeed成功,  risk冒……的风险,  challenge挑战,  spirit精神,  give up放弃. 

2.语法:

Past continuous: 

过去进行时

subject + verb to be(past tense) + verb-ing

I was watching.  

我当时正在看。

You were working.

你当时正在工作。

We were cooking the meal . 

我们当时正在做饭。 

He/She was dancing.

他/她当时正在跳舞。

They were doing homework.

他们当时正在做作业。                 

3.Were you ………………?  

   你当时在...?

   Yes, I was. / No, I wasn’t.

   是的/不是.

   Were you watching the news yesterday morning?  

   No, I wasn’t.

   Were you swimming?

   Yes, I was.

   What were you doing?  

   你当时在做什么？ 

   I was …………..  

   我当时在......

   What were you doing?  

   I was climbing the mountain. 

   I was driving a car.

   I was flying the kite.

4.Was he/she ………………?  

   他/她当时在.......?

   Yes, he/she was. 

   No, he/she wasn’t.

   是的/不是.

   Was she feeding the dog?  

   No, she wasn’t.

   Was he watering the plants?

   No, he wasn’t.

   Was he mopping the floor?  

   Yes, he was.

   What was he/she doing?  

   他/她当时在做什么? 

   He/She was …………..  

   他/她当时在.......

   What was he doing?  

   He was taking out trash last night. 

   He was feeding the cat.

   He was riding a bike.

   What was she doing?  

   She was asking the question.

   She was looking outside.

   She was taking a walk.