<例句>
He should not drink and drive.
他不應(yīng)該酒后開車。
<語(yǔ)法分析>
should在這個(gè)句子中是情態(tài)動(dòng)詞的用法,表示“應(yīng)該”意思接近于ought to。作助動(dòng)詞時(shí),should可用于第一人稱,構(gòu)成過去將來時(shí)態(tài)。在某些句子中,用should可以使口氣顯得更婉轉(zhuǎn),在某些賓語(yǔ)從句和主語(yǔ)從句里可以用來構(gòu)成謂語(yǔ),也用在虛擬條件句和條件從句中。在某些由in case, so that, lest等引導(dǎo)的狀語(yǔ)從句中,也可以用should。
<觸類旁通>
(1) I said I should be glad to help.
我說過我將樂于幫忙。
語(yǔ)法分析:should可用于第一人稱,構(gòu)成過去將來時(shí)態(tài),在口語(yǔ)里大多用would。
(2) You should have been helping him.
你應(yīng)該在幫助他。
語(yǔ)法分析:作情態(tài)動(dòng)詞用,后面可以用完成形式。
(3) I should be glad to talk to you.
我很高興和你談?wù)劇?/p>
語(yǔ)法分析:用在某些句子里使語(yǔ)氣更婉轉(zhuǎn),只用于第一人稱。
(4) He determined that she should study music.
他決定她學(xué)習(xí)音樂。
語(yǔ)法分析:在某些賓語(yǔ)從句中構(gòu)成謂語(yǔ)。
(5) It was necessary that he should work hard.
他用功很有必要。
語(yǔ)法分析:在某些主語(yǔ)從句里構(gòu)成謂語(yǔ)。
(6) Should I be free thiss afternoon, I will come.
如果今天下午有時(shí)間,我就來。
語(yǔ)法分析:用在條件從句中,主句謂語(yǔ)可以用虛擬語(yǔ)氣或陳述語(yǔ)氣等。
(7) I should say she's over fifty.
我看她有五十多歲了。
語(yǔ)法分析:表示猜測(cè)。
<鞏固練習(xí)>
(1) He considered how he ______answer.
(2) I _____ be grateful for your help.
(3) She arranged that I _____ go abroad.
(4) It is only right that he _____ have a share.
(5) How _____ I know?
(6) If I was asked to work on Sunday I _____ resign.
(7) She was terrified lest she _____ slip on the icy rocks.
<參考答案>
(1) should (2) should (3) should (4) should (5) should (6) should (7) should