B) Complete the sentences with proper conjunctions. Do not refer to the passage until you finish your exercise. 用连词填空完成句子。完成练习后再对照课文,核对答案。
1. But everyone else was dressed well I felt silly.
2. Fourth, it's best not to ask personal questions you know the person quite well.
3. You'll see what I mean you get here!

1. so, that 2. unless 3. as soon as

Ⅴ. Special difficulties. 难点。
A) 朗读并口头翻译下面句子,小结 It 用作形式主语的用法。
1. It's so great to hear from you.
2. It's normal to be on time or a few minutes late, ...
3. ...it's important to bring a gift when you visit someone.
4. At that party it was surprising to see how nicely everyone was dressed.
5. ...it's best not to ask personal questions unless you know the person quite well.
小结:这五个句子均属于 "It is/was +形容词+ to do sth /not to do sth 句型。其中 It 作主语,将的主语 to do sth/not to do sth 后置。

形式,真正

B) 仿照例句用 it 改写下列句子。
Modal: To learn about French customs is interesting. →
It's interesting to learn about French customs.
1. To dress properly when you attend a party is important.

2. To use French when you talk with local people is better.

3. Not to ask ladies about their age is polite.

4. Not to be late for class is important.

1. It's important to dress properly when you attend a party.
2. It's better to use French when you talk with local people.
3. It's polite not to ask ladies about their age.
4. It's important not to be late for class.

Ⅰ. Observe the words and sum up the rules. Then write down the negative forms of the adjectives. Use your dictionary when necessary. 观察下列词汇并总结规律,然后写出下列形容词的否定形式。需要时可使用词典。
1. safe-unsafe friendly-unfriendly interesting-uninteresting
tidy-untidy healthy-unhealthy important-unimportant
common-uncommon happy-unhappy
多数形容词前加否定前缀,可将其变为否定形式。
2. proper-improper perfect-imperfect possible-impossible
部分形容词常前加否定前缀,可将其变为否定形式。
3. formal-informal
部分形容词常前加否定前缀,可将其变为否定形式。
usual- comfortable- fair-
able- polite- patient-
correct- active- direct-

1. un 2. im 3. in unusual, uncomfortable, unfair, unable, impolite, impatient, incorret, inactive, indirect