<例句>
He should not drink and drive.
他不應該酒后開車。
<語法分析>
should在這個句子中是情態(tài)動詞的用法,表示“應該”意思接近于ought to。作助動詞時,should可用于第一人稱,構成過去將來時態(tài)。在某些句子中,用should可以使口氣顯得更婉轉,在某些賓語從句和主語從句里可以用來構成謂語,也用在虛擬條件句和條件從句中。在某些由in case, so that, lest等引導的狀語從句中,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。
語法分析:should可用于第一人稱,構成過去將來時態(tài),在口語里大多用would。
(2) You should have been helping him.
你應該在幫助他。
語法分析:作情態(tài)動詞用,后面可以用完成形式。
(3) I should be glad to talk to you.
我很高興和你談談。
語法分析:用在某些句子里使語氣更婉轉,只用于第一人稱。
(4) He determined that she should study music.
他決定她學習音樂。
語法分析:在某些賓語從句中構成謂語。
(5) It was necessary that he should work hard.
他用功很有必要。
語法分析:在某些主語從句里構成謂語。
(6) Should I be free thiss afternoon, I will come.
如果今天下午有時間,我就來。
語法分析:用在條件從句中,主句謂語可以用虛擬語氣或陳述語氣等。
(7) I should say she's over fifty.
我看她有五十多歲了。
語法分析:表示猜測。
<鞏固練習>
(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