+动词原形的情形

　　1.在动词suggest, order, demand, propose, command, request, desire, insist, require, decide, promise, resolve, argue, maintain, determine, recommend, advise, advocate, persuade等表示命令、建议、要求动词后的宾语从句中。

　　She insisted that the seats be booked in advance. 她坚持要预定座位。

　　He advised that the doctor be sent for. 他劝我们派人请医生。

　　注：如果上述动词作其他意思解释，或者说话者认为所讲的事是事实，要用陈述语气。

　　When asked why he declined our invitation, he suggested that he was not on good terms with the director.

　　真题重现

　　The professor required that __________________。

　　参考答案：we hand in our research report

　　2. 在advice, demand, order, necessity, resolution, decision, proposal, requirement, suggestion, idea, recommendation, request, plan,等名词后的主语从句或表语从句中------上面动词对应的名词

　　He issued the order that the troops withdraw at once. 他命令部队马上撤退。

　　3. 在形容词important, necessary, imperative, natural, urgent, essential, appropriate, desirable, vital, advisable, preferable, incredible以及短语no wonder, a pity等可以构成It is +形容词+that句型中。

　　It is necessary that some immediate effort be made. 必须立即采取行动。

　　真题重现

　　It is absolutely unfair that these children ______.

　　参考答案：These children be deprived of the right to receive education.

　　if或but for等引导的条件句

　　if引导虚拟条件句的用法

　　would+动词原形

　　He wouldnt feel so cold if he were indoors.他要是在室内就不会觉得冷了。

　　I am sorry I am very busy just now. If I had time, I would certainly go to the movies with you.

　　我很抱歉，现在很忙。如果有时间，我肯定陪你去看电影了。

　　The conference wouldnt have been so successful if we hadnt made adequate preparations.

　　如果我们不做充分的准备，会议是不会开得这么成功的。

　　If it snowed/were to snow/should snow tomorrow, I should stay at home.

　　but for=if it were not for/if it had not been forl

　　But for your help they would not have fulfilled the task in time.

　　真题重现

　　The victim _______________________if he had been taken to hospital in time

　　参考答案：would have survived

　　But for mobile phone, ____________________.

　　我们的通讯就不可能如此迅速和方便)

　　参考答案：our communication would not have been so efficient and convenient.

　　1If you had ___________________.

　　参考答案：followed my advice/suggestion, you would not have been in trouble.

　　It is time 句型要求用虚拟语气

　　谓语动词用过去式，指现在或将来的情况，表示早该干某事而已经有些晚了。

　　Its time_____________________ about the traffic problem downtown.

　　something was done/some measures were taken

　　动词wish后的宾语从句用虚拟语气

　　I wish she were here. 她在这里就好了。

　　I wish you would go with us tomorrow. 但愿你明天跟我们一块去。

　　I wish she had taken my advice. 那时她要是听我的话就好了。

　　if only后用虚拟语气

　　+动词原形的情形

　　1.在动词suggest, order, demand, propose, command, request, desire, insist, require, decide, promise, resolve, argue, maintain, determine, recommend, advise, advocate, persuade等表示命令、建议、要求动词后的宾语从句中。

　　She insisted that the seats be booked in advance. 她坚持要预定座位。

　　He advised that the doctor be sent for. 他劝我们派人请医生。

　　注：如果上述动词作其他意思解释，或者说话者认为所讲的事是事实，要用陈述语气。

　　When asked why he declined our invitation, he suggested that he was not on good terms with the director.

　　真题重现

　　The professor required that __________________。

　　参考答案：we hand in our research report

　　2. 在advice, demand, order, necessity, resolution, decision, proposal, requirement, suggestion, idea, recommendation, request, plan,等名词后的主语从句或表语从句中------上面动词对应的名词

　　He issued the order that the troops withdraw at once. 他命令部队马上撤退。

　　3. 在形容词important, necessary, imperative, natural, urgent, essential, appropriate, desirable, vital, advisable, preferable, incredible以及短语no wonder, a pity等可以构成It is +形容词+that句型中。

　　It is necessary that some immediate effort be made. 必须立即采取行动。

　　真题重现

　　It is absolutely unfair that these children ______.

　　参考答案：These children be deprived of the right to receive education.

　　if或but for等引导的条件句

　　if引导虚拟条件句的用法

　　would+动词原形

　　He wouldnt feel so cold if he were indoors.他要是在室内就不会觉得冷了。

　　I am sorry I am very busy just now. If I had time, I would certainly go to the movies with you.

　　我很抱歉，现在很忙。如果有时间，我肯定陪你去看电影了。

　　The conference wouldnt have been so successful if we hadnt made adequate preparations.

　　如果我们不做充分的准备，会议是不会开得这么成功的。

　　If it snowed/were to snow/should snow tomorrow, I should stay at home.

　　but for=if it were not for/if it had not been forl

　　But for your help they would not have fulfilled the task in time.

　　真题重现

　　The victim _______________________if he had been taken to hospital in time

　　参考答案：would have survived

　　But for mobile phone, ____________________.

　　我们的通讯就不可能如此迅速和方便)

　　参考答案：our communication would not have been so efficient and convenient.

　　1If you had ___________________.

　　参考答案：followed my advice/suggestion, you would not have been in trouble.

　　It is time 句型要求用虚拟语气

　　谓语动词用过去式，指现在或将来的情况，表示早该干某事而已经有些晚了。

　　Its time_____________________ about the traffic problem downtown.

　　something was done/some measures were taken

　　动词wish后的宾语从句用虚拟语气

　　I wish she were here. 她在这里就好了。

　　I wish you would go with us tomorrow. 但愿你明天跟我们一块去。

　　I wish she had taken my advice. 那时她要是听我的话就好了。

　　if only后用虚拟语气