should 是情態(tài)動詞,后接動詞原形。should譯為應(yīng)該；大概是，有可能；將會，shall，can, may,must等都是情態(tài)動詞，它們不能獨(dú)立作謂語，只能和動詞原形一起構(gòu)成謂語。舉例：People should diversify their investments.人們應(yīng)分散投資在幾家公司。should there be a flood, what should we do? 萬一發(fā)生水災(zāi)我們怎么辦？

Should的用法

1.should后直接跟動詞原形，沒有人稱和數(shù)的變化, 如：

You should go home at once.He should eat more vegetables.I should finish my homework before nine.should的否定形式是在should后面加not, 可以縮寫為shouldn’t, 意為“不應(yīng)當(dāng); 不應(yīng)該”。如:You should not / shouldn’t insult her. 你不應(yīng)該羞辱她。

2.should作為情態(tài)動詞最基本的意思是“應(yīng)該”，既可指建議或勸告某人“應(yīng)該”做某事，也可指有責(zé)任或義務(wù)“應(yīng)該”做某事，如：You should tell your mother. 你應(yīng)該告訴你的媽媽。

3.should可以與say, think, imagine等動詞連用，使語氣變得委婉，如：I should say he is an English teacher. 我想他是一位英語老師。I should think it is a good song. 我想那是一首好曲子。

`But what should I sing?' she interrupted him, keenly.

“可是我該唱什么呢？”她打斷他的話，滿心期待地問。

Dolly is myopic and should see an optician.

多莉是近視眼，應(yīng)該看看眼科醫(yī)生。

He should get an uncontested lead.

毫無疑問，他會獲得領(lǐng)先。

4You should have seen him, it was hysterical!

你真該看看他的樣子，那真是樂死人了！

5The boxes should be constructed from rough-sawn timber.

這些箱子應(yīng)該用粗鋸木料來做。