高中英語語法-should 用法講與練之二
should 用法講與練之二
用于表語從句中）
5. 用在 It is / was necessary/ important/ strange/ incredible 或 It is a pity/ a shame/ no wonder 之后由 that 引導的主語從句中， should 有應該、必須、竟然、居然之意。例如：
It is necessary that he （should） be sent there at once. 有必要馬上派他到那里去。
It is strange that the wheel should turn so slowly.
真奇怪，這個輪子竟然轉(zhuǎn)動得如此之慢。
It is a great pity/ shame/ that he should be so conceited.
真遺憾，他竟會這樣自高自大。
九 . should have + - ed 分詞結(jié)構(gòu)用來表達下述意義：
1. 表示應該已經(jīng)，本來應該，即過去該做某事但實際沒有做，其否定式 shouldn't have + - ed 分詞意為本來不應該。例如：
These cells should have been kept in somedry places. 這些電池本來應該放（保存）在干燥的地方。（但實際上沒有把它們放在干燥的地方。）
You shouldn't have dept those cells in the damp place. 你本來不該把那些電池放在潮濕的地方。（但實際上已經(jīng)把它們放到潮濕的地方了。）
2. 表示（估計）應該已經(jīng)，大概已經(jīng)，即對過去情況的推測。例如：
They left at nine， so they should have arrived （= probably have arrived） home by now.
他們是九點鐘走的，現(xiàn)在應該已經(jīng)到家了。
They should have finished their work， for they began to do it so early.
他們很早就開始工作，現(xiàn)在大概已經(jīng)干完了。
3. 意為竟然已經(jīng)，居然已經(jīng)，即表示說話人對已經(jīng)出現(xiàn)的事態(tài)感到驚奇、驚喜、懷疑。例如：
I'm surprised that he should have been so foolish. 我很奇怪，他竟然會這么傻。
I'm amazed that Mr Harris should have said nothing about the matter.
這件事，哈里斯先生竟然只字未提，對此我大為驚異。
It is wonderful that you should have achieved so much these years.
這幾年你竟然取得如此大的成就，你真了不起。
此外， should 還可以出現(xiàn)在 should be doing sth 或 should have been doing sth 等句式中，表示應該正在或表示說話人的某種不滿情緒。例如：
Why should we be sitting here doing nothing？ 我們干嘛坐在這里閑著？
You should be wearing a mask. 你應當戴著口罩。
She shouldn't be working like that. She is still so weak.
她不應當那樣干。她身體還很虛弱。
You should have been waiting for us. Why haven't you？ 你應當?shù)戎覀兊摹Ｔ趺礇]有等？
should 用法講與練之二
用于表語從句中）
5. 用在 It is / was necessary/ important/ strange/ incredible 或 It is a pity/ a shame/ no wonder 之后由 that 引導的主語從句中， should 有應該、必須、竟然、居然之意。例如：
It is necessary that he （should） be sent there at once. 有必要馬上派他到那里去。
It is strange that the wheel should turn so slowly.
真奇怪，這個輪子竟然轉(zhuǎn)動得如此之慢。
It is a great pity/ shame/ that he should be so conceited.
真遺憾，他竟會這樣自高自大。
九 . should have + - ed 分詞結(jié)構(gòu)用來表達下述意義：
1. 表示應該已經(jīng)，本來應該，即過去該做某事但實際沒有做，其否定式 shouldn't have + - ed 分詞意為本來不應該。例如：
These cells should have been kept in somedry places. 這些電池本來應該放（保存）在干燥的地方。（但實際上沒有把它們放在干燥的地方。）
You shouldn't have dept those cells in the damp place. 你本來不該把那些電池放在潮濕的地方。（但實際上已經(jīng)把它們放到潮濕的地方了。）
2. 表示（估計）應該已經(jīng)，大概已經(jīng)，即對過去情況的推測。例如：
They left at nine， so they should have arrived （= probably have arrived） home by now.
他們是九點鐘走的，現(xiàn)在應該已經(jīng)到家了。
They should have finished their work， for they began to do it so early.
他們很早就開始工作，現(xiàn)在大概已經(jīng)干完了。
3. 意為竟然已經(jīng)，居然已經(jīng)，即表示說話人對已經(jīng)出現(xiàn)的事態(tài)感到驚奇、驚喜、懷疑。例如：
I'm surprised that he should have been so foolish. 我很奇怪，他竟然會這么傻。
I'm amazed that Mr Harris should have said nothing about the matter.
這件事，哈里斯先生竟然只字未提，對此我大為驚異。
It is wonderful that you should have achieved so much these years.
這幾年你竟然取得如此大的成就，你真了不起。
此外， should 還可以出現(xiàn)在 should be doing sth 或 should have been doing sth 等句式中，表示應該正在或表示說話人的某種不滿情緒。例如：
Why should we be sitting here doing nothing？ 我們干嘛坐在這里閑著？
You should be wearing a mask. 你應當戴著口罩。
She shouldn't be working like that. She is still so weak.
她不應當那樣干。她身體還很虛弱。
You should have been waiting for us. Why haven't you？ 你應當?shù)戎覀兊摹Ｔ趺礇]有等？
