Unit 8 虛擬語氣
our suggestion is that you（ should）be the first to go.
my advice is that we（____________）send for doctor li.
do you know the order that you（should）keep watch？
5.虛擬語氣在其他狀語從句中的用法
在as if引導(dǎo)的狀語從句中，用過去式表示與現(xiàn)在事實不符，用過去完成式表示與過去事實不符；
在so that，in order that引導(dǎo)的狀語從句中，常用should/would/could/might+動詞原形來表示虛擬語氣。如：
they talked as if they________ __________ friends for years.
she stayed at home for a few days so that she could take care of her mother.
he took a taxi to the station so that she should not miss the train.
6.虛擬語氣在定語從句中的用法：
在it is time后面的定語從句中常用過去式表示虛擬。
it’s time i was going.
it’s time somebody ___________(teach)you to behave yourself.
7. 由wish引起的表示愿望的虛擬語氣
a.用wish表示對現(xiàn)在的愿望時，它所引起的賓語從句中謂語動詞形式為：過去式（be動詞用were）。
b.用wish表示對將來的愿望時，它所引起的賓語從句中謂語動詞形式為：would, could, might+ 動詞原形。
c.wish用于對過去的事實表示一種不可能實現(xiàn)的愿望時，賓語從句中的謂語動詞形式為：had+動詞過去分詞或could, would + have +動詞過去分詞。
i wish that he__________ so lazy.
i wish i____________ wasted so much time.
i wish she would change her mind.
8. had hoped/ planned/ thought/ wanted/ intended表示一種過去未實現(xiàn)的愿望或令人失望的事。
i had thought he had been dead for at least 20 years.
i had hoped that she would go to the u.s. and study there, but she said
she liked to stay in china.
9. would rather.
would (had) rather, would as soon, would sooner和would prefer所引起的從句中要求用過去式表示當(dāng)時或?qū)淼那闆r，用過去完成時表示過去的情況，表示希望或婉轉(zhuǎn)的責(zé)備。例如：
i’d rather you __________the letter right away. 我倒希望你把這封信立刻寄出去。
i would prefer he didn’t stay there too long.我倒希望他不要在那兒呆得太久。
i would just as soon you had returned the book yesterday.我真希望你昨天把這本書還了。
10.it’s (high, about) time that 句型中that從句中要求用虛擬語氣形式，即動詞要用過去式。
it’s time that something ________ ____________(do)about the traffic problem downtown.
it is high time that we put an end to this discussion.現(xiàn)在是我們該結(jié)束講座的時候了
11. 虛擬語氣在由某些連詞或個詞引出的表示條件、目的的狀語從句中的使用。常見的這些連詞和介詞有：
1) unless (除非)，provided(倘若)，supposing(假若)，providing(倘若) , on condition that(如果),由這些詞、詞組引出的從句，動詞多用過去時。
除非你命令他做，要不他是不會做的。
he wouldn't do it unless you ordered him to.