4．It’s very important to be on time.

准时是非常重要的。

不定式短语to be on time在此作主语；on time是个短语，表示“准时，按时”于指定时。而in time则表示“及时，总有一天，最后，终于，迟早”等。

[例](1)The train pulled in on time.

火车准时进站。

(2)Be sure to get there on time and help them.

一定要准时到那儿并帮助他们。

(3)We were just in time for the bus.

我们正好赶上那班公共汽车。

(4)If you keep on, you’ll succeed in time.

如果坚持下去，你们总有一天会成功的。

3．We often just drop by our friends’ homes.

我们只是访问朋友的家。

drop by“访问，拜访”，是美式英语，与drop in (on sb.)“顺便走访(某人)”近义。

[例](1)Would you drop in tomorrow evening for a chat?

你明晚有时间来谈谈吗？

(2)I dropped in on the Browns on my way home.

我在回家的路上顺便走访了布朗夫妇。

(3)The young man used to drop by his uncle.

那年轻人过去常拜访他叔叔。

(4)Do you often drop by your neighbours home.

你经常走访邻居家吗？

2．Spending time with family and friends is very important to us.

对我们来说与家人和朋友共度时光是很重要的。

本句是动名词短语作主语。

[例](1)Talking mends no holes.(谚语)

空谈无济于事。

(2)There is no joking about such matters.

这种事开不得玩笑。

(3)Breathing became difficult on the summits.

在山顶上呼吸变得困难了。

(4)It was very difficult getting everything ready in time.

要把一切按时准备好很困难。

5．现在完成时态的被动语态。

拓展发散思维

发散思维分析

1….it’s okay if you are a bit late.

如果你稍迟一点还行。

a bit在此作状语修饰late，表示“稍微，一点儿”，可以与a little互用；此外a bit of与a little of可互用。但要注意not a bit与not a little的区别，前者表示“一点也不”，而后者表示“许多、很”。

[例](1)He feels a bit cold.或He feels a little cold.

他感觉有点儿冷。

(2)He had a bit of bread for his breakfast.

他早上吃了点儿面包。

(3)He has got a nice bit of money for his book.

他那本书得到了相当可观的一笔钱。

(4)I know a little about what he did.

关于他干的事，我知道一点儿。

(5)There’s a little of time.

还有一点时间。

(6)-Are you tired?

你累吗？

-No, not a bit.

一点也不累。

(7)I’m not a bit like what you think.

我根本不是你想像的那种人。

(8)He gives me not a little trouble.

他给我带来许多麻烦。

(9)The old man is not a little bewildered.

那位老人大惑不解。

4．父母怎样帮助和教育子女的方法和恒心。

3．本单元所学的常用词语，如shake, bow, greet, pick, point, behave以及drop by, after all, pick up, be (get) used to, cut up和give up等的用法。

2．动词不定式作主语的句式及用法。

1．be supposed to do sth.的用法。

2．动词不定式或动词不定式短语作主语

不定式的用法前面已讲过，这里主要是不定式作主语的用法。通常使用的句式是it is…to do sth.。

[例](1)It is important for us to learn English well.

学好英语对我们来说是很重要的。

(2)It is very difficult to work out this problem.

算出这道题是很难的。

(3)It is very kind of you to help me.

你能帮助我，你真好。

(4)To see one time is better than to hear a hundred times.

百闻不如一见。

(5)How would it be to start tomorrow?

明天动身怎么样？

(6)It takes thirty hours to get there by train.

坐火车到那儿要三十个小时。

点拨重点难点

1．be supposed to do的用法

1)表示“应该，被期望”。

[例](1)We are supposed to be here at seven.

我们应该七点钟到。

(2)The library is supposed to open at eight in the morning.

图书馆应在早晨八点钟开门。

(3)What are you supposed to do when you meet someone?

当你遇到某人的时候应该怎么做？

(4)You’re supposed to kiss.

你应该亲吻。

(5)You’re not supposed to shake hands.

你不应该握手。

2)用于否定句中可表示“获准”。

[例](1)You are not supposed to smoke on the bus.

你不可以在公共汽车上抽烟。

(2)You are not supposed to take photos in the hall.

你可不能在大厅里拍照。