Unit 1 What’s the matter
单元语法聚焦一
情态动词should
should作为情态动词，不随主语人称、数和时态的变化而变化，且后面永远跟动词原形。
1．用法
(1)should 意为 “应该，应当”，表示责任或义务，还可以表示命令、责备、要求等。如：
You should finish your homework first.
你应该首先完成家庭作业。
(2)should 意为 “应该，应当”，经常用于提建议。如：
You should drink some hot water and keep warm.
你应该喝点儿热水并注意保暖。
2．句式变化
(1)肯定句
主语＋should＋动词原形＋其他． 如：
They should eat a lot of vegetables.
他们应该吃大量的蔬菜。
(2)否定句
主语＋shouldn't＋动词原形＋其他． 如：
You shouldn't eat anything now.
现在你不应该吃任何东西。
(3)一般疑问句及其回答
Should＋主语＋动词原形＋其他？
肯定答语：Yes, 主语＋should.
否定答语：No, 主语＋shouldn't. 如：
—It's raining hard.Should we drive slowly?
雨下得大。我们应该开得慢点儿吗？
—Yes, we should. 是的，我们应该这样做。
(4)特殊疑问句
特殊疑问词＋should引导的一般疑问句？ 如：
What should I do? 我应该做什么？
[拓展]
一些经常用来提建议或征求对方意见的句型：
1．Shall we do…？我们做……好吗？
2．Let's/Let us… 让我们……
3．Why not do…？/Why don't you do…？
为什么不做……呢？
4．What/How about doing…？做……怎么样？
5．You'd better do…你最好做……
6．Will you please do…？请你做……好吗？
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( )1.2018·株洲You look so weak! I think you________ go to see a doctor at once.
A．might B．should C．could
( )2.2018·泰州To keep children away from danger during the coming summer holiday, parents ________ give them some safety tips(提示)．
A．should B．may
C．could D．might
( )3.2018·凉山Parents ________ put the things like knives and medicine away in the house to keep children safe.
A．may B．might
C．can D．should
( )4.2017·苏州Dogs ________ run through soccer games at the park. It's dangerous!
A．should B．shouldn't
C．need D．needn't
( )5.2017·株洲We ________ build our country into a country of peace, a country of wealth, a country of opening up.
A．might B．should
C．could
( )6.2017·眉山—Bob, I'm not good at English. What should I do?
—Why not ________ an English club to practice ________ English?
A．to join; speaking
B．join; to speak
C．to join; to speak
D．join; speaking
( )7.2017·宿迁—Is Mike coming to the fashion show tomorrow?
—I'm not sure. He ________ not come.
A．must B．can
C．may D．should
( )8.2017·十堰—Must I hand in my book report today, Mr. Brown?
—No, you ________. The book report is due in two weeks.
A．can't B．mustn't
C．shouldn't D．needn't
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教师详解详析
1．B 2.A 3.D
4．B 考查情态动词的辨析。句意：狗不应该在公园里的足球比赛中跑来跑去，这很危险！表示“不应该”应用shouldn't。故选B。
5．B 考查情态动词的辨析。句意：我们 ________ 把我们的国家建设成和平、富强、开放的国家。might意为“可能”；should意为“应该”；could意为“能，可能”。根据句意可知此处指“应该”，故选B。
6．D 考查非谓语动词的用法。句意：“鲍勃，我不擅长英语，我该怎么办呢？”“为什么不参加英语俱乐部练习说英语呢？”由“Why not do sth.？”可知，第一空用join；practice doing sth.意为“练习做某事”。故选D。
7．C
8．D 考查情态动词辨析。句意：“我今天必须上交读书报告吗，布朗先生？”“不，不必。读书报告在两周后上交。”回答以“Must I…？”开头的一般疑问句时，否定回答常用needn't或don't have to，表示“不必”。故选D。
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