句型36

　　if it were not for (= were it not for)

　　if it hadnt been for (= had it not been for)要不是因為有如果不是

　　[注意]這種結構中不能用否定結構的縮寫形式，即不能用werent it for)

　　[例句]

　　If it hadnt been for (= Had it not been for) the determined captain, all the passengers on board wouldnt have been saved. 要不是船長一直堅強，船上的旅客就不會得救。

　　If it were not for your rich parents, you couldnt live so easy a life. 要不是你父母有錢，你的生活不會如此安逸。

　　If it were not for the expense, I would go abroad now. 如果不是因為經費問題，我現在就出國了。

　　句型37

　　but for + 名詞和but that +從句，意思是倘若不是;要不是，接虛擬語氣

　　[例句]

　　But for air and water, nothing could live. (= If there were no air or water, nothing could live.)

　　如果沒有空氣和水，什么東西都難以生存。

　　But for the storm, we should have arrived earlier.

　　= If it hadnt been for the storm, we should have arrived earlier. 如果不是暴風雨，我們早就到了。

　　But for you, we couldnt have carried out the plan. 要不是你的話，我們無法實施那項計劃。

　　She could not have believed it but that she saw it. 若非親眼所見，她是不會相信的。

　　句型38

　　在動詞insist(1堅持做某事)，order, command(2命令), advise, suggest, propose(3建議做某事)，demand, require, request, ask(4要求)等表示建議、命令、要求的名詞性從句中謂語動詞要用虛擬語氣。基本句型：主語+ (should) + 動詞原形。另外像decide, desire, intend, recommend等也要接(should)+動詞原形結構。

　　[例句]

　　Mother insists that Tom (should) go to bed at nine oclock.(賓語從句)

　　We suggested that the meeting (should) be held at once.

　　It was required that the crops (should) be harvested at once.(主語從句)

　　The suggestion that he (should) be invited was rejected.(同位語從句)

　　That is their demand that their wages (should) be increased.(表語從句)

　　[注意1]

　　advice, suggestion, order, demand, proposal, request, desire, command, decision, requirement等名詞引導的同位語從句或表語從句，謂語動詞用 (should) + 動詞原形。

　　[注意2]

　　Its suggested/ advised/ demanded/ordered/requested/proposed/required/desired等結構后的主語從句中，謂語動詞用(should) + 動詞原形。

　　[注意3]suggest意思是表明，暗示;說明insist意思是堅持觀點，堅持看法時，句子不能用虛擬語氣。

　　[例句]

　　He insisted that he was innocent.=He insisted on his innocence. 他堅持說自己是無辜的。

　　He insisted that he had never done wrong. 他堅持說沒有做錯事情。

　　Are you suggesting that Im not suited for the job? 你是在暗示說我不適合做那項工作?

　　The look on his face suggested that the teacher was quite satisfied with the result. 臉上的表情說明老師對結果感到滿意。

　　句型39

　　It is necessary/important/natural/impossible/essential(基本的)等結構后的主語從句中要用虛擬語氣，即主語+(should)+動詞原形

　　[例句]

　　Its necessary that Tom take the exam first. Tom有必要先參加考試。

　　With the society developing very fast, its quite necessary/important that we (should) have a good knowledge of English and computer. 隨著社會的快速發展，我們有必要精通英語和電腦。

　　句型40

　　Its strange/surprising/a pity/a shame/a surprise (that) should doshould表示竟然

　　[例句]

　　Its a pity that she should miss the chance. 很遺憾她錯過了機會。

　　Its really surprising that a prophecy(預言)should coincide with the fact so exactly. 令人驚訝的是，預言和事實竟然如此巧合。

　　Its strange that he shouldnt pass the exam. 奇怪的是他竟然沒有通過考試。

　　句型36

　　if it were not for (= were it not for)

　　if it hadnt been for (= had it not been for)要不是因為有如果不是

　　[注意]這種結構中不能用否定結構的縮寫形式，即不能用werent it for)

　　[例句]

　　If it hadnt been for (= Had it not been for) the determined captain, all the passengers on board wouldnt have been saved. 要不是船長一直堅強，船上的旅客就不會得救。

　　If it were not for your rich parents, you couldnt live so easy a life. 要不是你父母有錢，你的生活不會如此安逸。

　　If it were not for the expense, I would go abroad now. 如果不是因為經費問題，我現在就出國了。

　　句型37

　　but for + 名詞和but that +從句，意思是倘若不是;要不是，接虛擬語氣

　　[例句]

　　But for air and water, nothing could live. (= If there were no air or water, nothing could live.)

　　如果沒有空氣和水，什么東西都難以生存。

　　But for the storm, we should have arrived earlier.

　　= If it hadnt been for the storm, we should have arrived earlier. 如果不是暴風雨，我們早就到了。

　　But for you, we couldnt have carried out the plan. 要不是你的話，我們無法實施那項計劃。

　　She could not have believed it but that she saw it. 若非親眼所見，她是不會相信的。

　　句型38

　　在動詞insist(1堅持做某事)，order, command(2命令), advise, suggest, propose(3建議做某事)，demand, require, request, ask(4要求)等表示建議、命令、要求的名詞性從句中謂語動詞要用虛擬語氣。基本句型：主語+ (should) + 動詞原形。另外像decide, desire, intend, recommend等也要接(should)+動詞原形結構。

　　[例句]

　　Mother insists that Tom (should) go to bed at nine oclock.(賓語從句)

　　We suggested that the meeting (should) be held at once.

　　It was required that the crops (should) be harvested at once.(主語從句)

　　The suggestion that he (should) be invited was rejected.(同位語從句)

　　That is their demand that their wages (should) be increased.(表語從句)

　　[注意1]

　　advice, suggestion, order, demand, proposal, request, desire, command, decision, requirement等名詞引導的同位語從句或表語從句，謂語動詞用 (should) + 動詞原形。

　　[注意2]

　　Its suggested/ advised/ demanded/ordered/requested/proposed/required/desired等結構后的主語從句中，謂語動詞用(should) + 動詞原形。

　　[注意3]suggest意思是表明，暗示;說明insist意思是堅持觀點，堅持看法時，句子不能用虛擬語氣。

　　[例句]

　　He insisted that he was innocent.=He insisted on his innocence. 他堅持說自己是無辜的。

　　He insisted that he had never done wrong. 他堅持說沒有做錯事情。

　　Are you suggesting that Im not suited for the job? 你是在暗示說我不適合做那項工作?

　　The look on his face suggested that the teacher was quite satisfied with the result. 臉上的表情說明老師對結果感到滿意。

　　句型39

　　It is necessary/important/natural/impossible/essential(基本的)等結構后的主語從句中要用虛擬語氣，即主語+(should)+動詞原形

　　[例句]

　　Its necessary that Tom take the exam first. Tom有必要先參加考試。

　　With the society developing very fast, its quite necessary/important that we (should) have a good knowledge of English and computer. 隨著社會的快速發展，我們有必要精通英語和電腦。

　　句型40

　　Its strange/surprising/a pity/a shame/a surprise (that) should doshould表示竟然

　　[例句]

　　Its a pity that she should miss the chance. 很遺憾她錯過了機會。

　　Its really surprising that a prophecy(預言)should coincide with the fact so exactly. 令人驚訝的是，預言和事實竟然如此巧合。

　　Its strange that he shouldnt pass the exam. 奇怪的是他竟然沒有通過考試。