1、作为情态动词，通常用来表示现在或将来的责任或义务，表示"应该，应当"。2、作为情态动词，可以用来表示有较大可能实现的猜测、推论，表示"可能，该(=will probably) "

The headmaster should arrive soon. They should be home by now，I think.3、表示"竟然" It's strange that he should be late.4、用在第一人称时，表示征求对方意见 Should I help you with the dinner？5、用于表示某种感情色彩，常用于why，how引起的特殊疑问句或that从句中，表示意外、惊喜、不能理解等意思。 How should I know? 我怎么知道？

用should或shouldn't填空

1. I can't sleep the night before exams. You ______ take a warm shower before you go to bed. 2. Good friends ______ argue each other. 3. There is little milk in the glass.We _______ buy some. 4. They didn't invite you? Maybe you ______ be friendlier.

四、重点难点分析

1、If you go to the party , you'll have a great time! have a good (great) time = have fun = enjoy oneself

2、Half the class won't come. (1)half adj. 一半的，半个的。

1）Half the class won't come.有一半的学生一会来。2）Half (of) the money is his.有一半的钱是他的。 3）Half (of) them are workers.他们当中有一半中工人。

表示"一半的......"可以用half + n. 或_____________. 其谓语动词取决于后面的名词或代词的形式。 4）Half of the boys _________ （come）to school by bike every day.

(2) class 集体名词，全班同学，是复数概念。还意为班级。Half the class come from this city.

3、Let's order food from the restaurant. order 及物v. 订购，订货，点菜，命令。order sb to do sth 命令某人做某事。 His father orders him to act at once.

4、Can you give me some advice please? advice 不可数n. 建议，劝告。表示数量时要用piece，some，much等词来修饰。a piece of / some / much advice.

练习：I have some problems with my English writing. Can you give me some ____?

A. advice B. decisions C. information D. message

五、单元练习。

（一）、单项选择。

1．He is a famous athlete and can ______ a lot of money every year.

A．pay B．make C．cost D．ask

2．If you study harder，you will ______ go to college.

A．are able to B．be able C．can be able to D．be able to

3．Nobody went there with him. He went by ___. A．him B．himself C．his D．themselves

4．I'm late for school today. I think my teacher must be ______ me.

A．worried about B．pleased with C．friendly to D．angry with

5．If she ______，she'll have a great time. A．do B．will do C．does D．did

6．It's a secret between you and me. I hope you can keep it ______.

A．to us B．to ourselves C．for us D．for ourselves

7．Unless we __the problem，we won't be happy. A．solve B．will solve C．solved D．solving

8．Your son often smokes. Please advise him ______it.

A．to smoke B．not to smoke C．smoking D．not smoking

9．He got __before he was famous. A．a education B．an education C. education D．some education

10.He often makes ______ mistakes，because he doesn't read ______.

A．careful；carefully B．careless；careful C．careless；carefully D．careful；carelessly

11．-I don't remember the teacher's telephone number.

-If you______，we can call her for help. A．are B．will C．do D．did

12．______ a problem is like ______ it in half.

A．Share；cut B．Sharing；cut C．Share；cutting D．Sharing；cutting

13.Do you think the worst thing is ______nothing? A．do B．does C．to do D．done

14．When they move ______ there，they live in ______.

A．to；apartment B．to；an apartment C．/；apartment D．/；an apartment

15．Half the class______. A．is sing B．is singing C．are singing D．sings

16. Anna was sent to teach music in a poor village in 2014.And she has some pleasant ___while working there. A．expressions B．experiments C．experiences D．emotions

17.Thousands of people died in the earthquake, it's ____ news that I have ever heard of.

A. a very serious B. a more serious C. the most serious D. a much serious

18. I'm always reading Harry Potter these days. I like Harry. He is very clever and ___.

A. poor B. lovely C. clean D. brave

（二）完成下面各题。

1.I think he will come tomorrow.(改为否定句) I ____ think he ____ come tomorrow.

2.You can't watch TV on weekdays.(改为祈使句）____ _____ TV on weekdays.

3.我期望下次能遇见你。I ___ ____ _____ meeting you next time

4.谁加入俱乐部，那由你来决定。Who can join the club, that's__ ___ you to dicide.

5.Lucy is _____(worry) about her study.