考点6.see sb do sth 、see sb doing sth的区别

1.see sb do sth :看见某人做了某事

2.see sb doing sth .看见某人正在做某事

The teacher saw the students _______(read) English when he came in .

Look!Can you see the girl _____(dance) under the tree ?

注：类似的动词有：hear ,watch ,notice 等。省to的不定式变被动语态时，需带上to

I often notice him go home alone .------

He is noticed _____ _____ home alone.

考点7.at the age of 的同义句：

at the age of = when sb was/ were ….

He began to learn English when he was four.=

He began to learn English ____ ____ ____ ______ four.

考点8.take part in / join 的区别：

1.take part in 表示参加某项活动，运动，事件等。着重强调以主人翁的姿态或在活动中负有责任而参加。

2.join表示加入组织，团体，党派而成为其中一员。

注：join sb in …. 表示“参与某人的活动之中”

He ______ the Party in 1987.

Can you come and _____us in the game ?

Twenty students from our class _________

the sports meeting last week.

考点9.句型：

Sb +be the first /last one (person) +to do sth

某人是第一个或最后一个干某事

Women and children are the first _______(take)to safety .

考点10.because / because of 的区别：

1.because 后面接从句(除what 从句之外)。

2.because of 后面接名词、代词、名词性短语、what从句。

He didn’t go to the party because he was ill.

He didn’t go to the party ____ _____ his ____.

She was very angry ______what you said .

A. because B. because of C./ D. with

考点11.keep的用法：

1.keep +adj 表示保持某种状态

Keep ______ , The baby is sleeping .

2.keep +sb/sth +adj 表示使某人保持某种状态

We must keep our classroom ______ .

3.keep doing sth . 表示不间断地持续做某事或一直做某事。

It kept _______(rain) all night .

4.keep on doing sth 表示反复做某事。

He kept on _______(make)the same mistakes.

5.keep +sb +doing sth 表示让某人一直做某事。

He kept us _______ (wait )for an hour .

6.keep +sb from +doing sth 表示阻止某人干某事。= stop sb (from )doing sth = prevend sb (from )doing sth .

Because of the heavy rain , we could go to school.= The heavy rain ______ us from ____to school.