主語(yǔ)從句中的虛擬語(yǔ)氣
在形如“It is (was)+形容詞(或過去分詞)+that……”結(jié)構(gòu)中，使用某些表示愿望、建議、請(qǐng)求、命令、可能、適當(dāng)、較好、迫切、緊近、重要等形容詞后的主語(yǔ)從句的謂語(yǔ)也用虛擬語(yǔ)氣。其表達(dá)形式為should +動(dòng)詞原形或省略should直接用動(dòng)詞原形(美國(guó)英語(yǔ)中省去should)
常用的形容詞：* natural (自然的), appropriate (適當(dāng)?shù)?,advisable (合適的), preferable (更可取的), better (更好的)* necessary (必須的), important (重要的), imperative (急需的), urgent (急迫的), essential (本質(zhì)的), vital (必不可少的)* probable (很可能的), possible (可能的)* desirable (極好的)advisable(合理的)，compulsory(必須的)，crucial(緊急的)，desirable(理想的)，essential(必要的)，imperative(迫切的)，incredible(驚人的)，necessary(必要的)，possible(可能的)，strange(奇怪的)，urgent(緊迫的)。
常用的過去分詞(Past Participle):* required (需要的), demanded (要求), requested (被請(qǐng)求的), desired (要求)* suggested (建議), recommended (推薦)* orderd (命令)
It is necessary that we (should 可省略,下同)have a walk now.(necessary, should + have) (表示有需要去散步)
2.It was necessary that we (should) make everything ready ahead of time.(necessary, should + make) (表示有必要事先做好準(zhǔn)備)
3. It is required that nobody (should) smoke here.(required, should + smoke) (表示要求不要在此抽煙)
4. It is important that every pupil (should) be able to understand therule of school.(important, should + be) (表示重要的是學(xué)生都能了解校規(guī))
5. It‘s important that we (should) take good care of the patient.(important, should + take) (表示重要的是照顧好病人)
6. It is natural that she should do so. (形容詞natural, should+動(dòng)詞原形do)
7.It is essential that these application forms be sent back as early as possible.這些申請(qǐng)表應(yīng)盡早地寄回，這是很重要的。
8.It is vital that enough money be collected to fund the project.重要的是募集足夠的錢，為這個(gè)項(xiàng)目提供資金。
9.It is desired that we(should)get everything ready this evening.希望我們今晚一切都準(zhǔn)備就緒。
注：在上述所列形容詞后面用that引出的賓語(yǔ)從句中，謂語(yǔ)動(dòng)詞也要用虛擬語(yǔ)氣。
10.I don‘t think it advisable that Tom be assigned to the job since he has no experience.湯姆缺乏經(jīng)驗(yàn)，指派他做這項(xiàng)工作我認(rèn)為是不恰當(dāng)?shù)摹?BR> 二、在It is +名詞+that…的主語(yǔ)從句中的虛擬語(yǔ)氣
在It is +名詞+that的主語(yǔ)從句中，常用虛擬語(yǔ)氣，表示建議、命令、請(qǐng)求、道歉、懷疑、驚奇等。這類名詞
有：advice ，decision ，desire ，demand ，idea，motion ，order，pity ，preference ，proposal，recommendation ，
requirement，resolution，shame，suggestion，surprise，wish，wonder等。
⑴、It is my proposal that he be sent to study further abroad.我建議派他去國(guó)外進(jìn)一步學(xué)習(xí)。
在形如“It is (was)+形容詞(或過去分詞)+that……”結(jié)構(gòu)中，使用某些表示愿望、建議、請(qǐng)求、命令、可能、適當(dāng)、較好、迫切、緊近、重要等形容詞后的主語(yǔ)從句的謂語(yǔ)也用虛擬語(yǔ)氣。其表達(dá)形式為should +動(dòng)詞原形或省略should直接用動(dòng)詞原形(美國(guó)英語(yǔ)中省去should)
常用的形容詞：* natural (自然的), appropriate (適當(dāng)?shù)?,advisable (合適的), preferable (更可取的), better (更好的)* necessary (必須的), important (重要的), imperative (急需的), urgent (急迫的), essential (本質(zhì)的), vital (必不可少的)* probable (很可能的), possible (可能的)* desirable (極好的)advisable(合理的)，compulsory(必須的)，crucial(緊急的)，desirable(理想的)，essential(必要的)，imperative(迫切的)，incredible(驚人的)，necessary(必要的)，possible(可能的)，strange(奇怪的)，urgent(緊迫的)。
常用的過去分詞(Past Participle):* required (需要的), demanded (要求), requested (被請(qǐng)求的), desired (要求)* suggested (建議), recommended (推薦)* orderd (命令)
It is necessary that we (should 可省略,下同)have a walk now.(necessary, should + have) (表示有需要去散步)
2.It was necessary that we (should) make everything ready ahead of time.(necessary, should + make) (表示有必要事先做好準(zhǔn)備)
3. It is required that nobody (should) smoke here.(required, should + smoke) (表示要求不要在此抽煙)
4. It is important that every pupil (should) be able to understand therule of school.(important, should + be) (表示重要的是學(xué)生都能了解校規(guī))
5. It‘s important that we (should) take good care of the patient.(important, should + take) (表示重要的是照顧好病人)
6. It is natural that she should do so. (形容詞natural, should+動(dòng)詞原形do)
7.It is essential that these application forms be sent back as early as possible.這些申請(qǐng)表應(yīng)盡早地寄回，這是很重要的。
8.It is vital that enough money be collected to fund the project.重要的是募集足夠的錢，為這個(gè)項(xiàng)目提供資金。
9.It is desired that we(should)get everything ready this evening.希望我們今晚一切都準(zhǔn)備就緒。
注：在上述所列形容詞后面用that引出的賓語(yǔ)從句中，謂語(yǔ)動(dòng)詞也要用虛擬語(yǔ)氣。
10.I don‘t think it advisable that Tom be assigned to the job since he has no experience.湯姆缺乏經(jīng)驗(yàn)，指派他做這項(xiàng)工作我認(rèn)為是不恰當(dāng)?shù)摹?BR> 二、在It is +名詞+that…的主語(yǔ)從句中的虛擬語(yǔ)氣
在It is +名詞+that的主語(yǔ)從句中，常用虛擬語(yǔ)氣，表示建議、命令、請(qǐng)求、道歉、懷疑、驚奇等。這類名詞
有：advice ，decision ，desire ，demand ，idea，motion ，order，pity ，preference ，proposal，recommendation ，
requirement，resolution，shame，suggestion，surprise，wish，wonder等。
⑴、It is my proposal that he be sent to study further abroad.我建議派他去國(guó)外進(jìn)一步學(xué)習(xí)。