《2025年课堂精练英语必修第二册北师大版》

5.Across the world,scientists had been trying to find a cure.
考点过去完成进行时had been doing
拓展　　现在完成进行时have/has been doing
单句语法填空
(1)When their first child was born,they________(marry)for3years.
(2)We________(live)here for ten years and all my families like the life here.
(3)She________(study)English for6years by the time she took the college entrance
　　examination.
(4)It________(snow)since yesterday.It is still snowing.

答案：
(1)had been married
(2)have been living
(3)had been studying
(4)has been snowing

6.However,Tu Youyou had an idea that Chinese herbs might hold the secret.
考点同位语从句
正确理解并翻译以下句子
(1)He made a promise that he would help me.
　　______________________________
(2)He told me the news that the Queen would visit China the next month.
　　______________________________
(3)Most of them have no doubt that he will pass the exam.
　　______________________________
(4)They have no idea at all where he has gone.
　______________________________
(5)His suggestion that we go to see the exhibition interested every one of us.
　______________________________

答案：
(1)他承诺会帮助我。
(2)他告诉了我女王下个月将访问中国这个消息。
(3)他们大多数人毫不怀疑他会通过考试。
(4)他们完全不知道他到哪里去了。
(5)他建议我们去看展览，这使我们每一个人都很感兴趣。

7.The reason why this was difficult was that the team had limited resources.
考点The reason why....is that....……的原因是……
单句语法填空
(1)The reason________he hasn't come is________he has to look after his father.
(2)The reason________she couldn't come to the meeting was________she had not been
　　invited.
单句改错
(3)This is the very reason why we have known from the newspaper.
(4)The reason why she didn't get the job is because she was not honest.

答案：
(1)why;that　
(2)why;that　
(3)把why改成that　
(4)把because改成that

8.However,after hundreds of failed experiments,they eventually came across a promising chemical.
考点come across偶遇
　拓展　　come out出现;出版;冲洗;(消息等)为人所知　come about发生
　　　　come up with想出;提供　come on出场;改进;加油;别装腔;得了吧
用方框中所给短语的适当形式填空
　　　　　　　　　come across;come up with;come about;come on
(1)Can you tell me how the accident________？
(2)We've just________an old friend we haven't seen for ages.
(3)Can you______________a solution to the problem?
(4)Oh,____________;you can't expect me to believe that!
(5)I________this book in an old bookstore in London.

答案：
(1)came about　
(2)come across　
(3)come up with　
(4)come on
(5)came across