【创新设计】2014-2015学年高中英语同步精练：选修6 Unit 3 Period 3(人教版,重庆专用)]

Unit 3 A healthy life Period 3 Grammar & Writing 课时精练（人教版选修6，重庆专用）

时间：45分钟

Ⅰ.说出下列各句中it的用法

1．In the 1870s, when Marx was already in his fifties, he found it important to study the situation in Russia, so he began to learn Russian.

________________________________________________________________________ 2．—Who is the girl in the photo on the wall?

—It's my sister.

________________________________________________________________________

3．He felt it useful learning English well.

________________________________________________________________________

4．You have helped me a lot. I shall never forget it.

________________________________________________________________________

5．It is very clear that the elephant's leg is round and tall like a tree.

________________________________________________________________________ 6．Beauty is everywhere. It makes us happy.

________________________________________________________________________

7．It was snowing heavily when he went out.

________________________________________________________________________

8．I felt it a surprise that they were all unfriendly to me.

________________________________________________________________________

9．It's early yet.

________________________________________________________________________

10．It's a pity that our teacher can't take part in our party.

________________________________________________________________________

答案 1.作形式宾语，指代后面的不定式短语。

2．作主语，代替人。

3．作形式宾语，指代后面的动名词短语。

4．作宾语，指代前面的内容。

5．作形式主语，指代后面的主语从句。

6．作主语，指代前面的内容。

7．作主语，指天气。

8．作宾语，表感受。

9．作主语，指时间。

10．作形式主语，代替后面的主语从句。

Ⅱ.把下列各句转换成用it作形式主语的句子

1．To say is easy, but to do is difficult.

________________________________________________________________________

2．He was clever to say so.

________________________________________________________________________ 3．Trying to drown your sorrows in drink is of no use.

________________________________________________________________________ 4．Some people say that more than 30,000 people died in the tsunami .

________________________________________________________________________ 5．When and where to hold the meeting hasn't been decided.

________________________________________________________________________

答案 1.It is easy to say, but it is difficult to do.

2．It was clever of him to say so.

3．It is no use trying to drown your sorrows in drink.

4．It is said that more than 30,000 people died in the tsunami.

5．It hasn't been decided when and where to hold the meeting.

Ⅲ.单项填空

1．The two girls are so alike that strangers find________difficult to tell one from the other.

A．it B．they C．her D. that

答案A[考查代词用法。句意：两个女孩长得如此相像以至于陌生人都发现很难区分开来。it在句中充当形式宾语，代替后面的真正的动词不定式宾语to tell one from the other，故选A项。]

2．Does________matter if he can't finish the job on time?

A．this B．that C．he D．it

答案D[matter作动词时，在疑问句或否定句中用it作主语，然后把whether引导的从句位于句末。]

3．I was disappointed with the film. I had expected________to be much better.

A．that B．this C．one D．it

答案D[it 特指the film。C项有一定干扰性。one 在此等于a film。]

4．Helping others is a habit，________you can learn even at an early age.

A．it B．that C．what D．one