高二英語First aid全單元教案
+ would/ could +have + p.p.
主+ wished + (that) + 主+ would/ could + v. (與將來相反)
3. as if/ though 引導的從句時，表示一般情況用陳述句，
句型：主+ v. + as if/ though + 主+ v-ed/ were (與現在相反)
主+ v. + as if/ though + 主 + had +p.p. 與過去相反
+ would/ could +have + p.p.
主+ v. + as if/ though + 主+ would/ could + v. (與將來相反)
e.g. it looks as if it is going to snow.
the sun rises in the east and sets in the west, so it seems as if the sun were circling round the earth.
4. would rather 的虛擬用法：
句型：1.) 主+ would rather + v. 表示現在或將來主觀上的愿望與選擇。
e.g. marry would rather (not) have a fresh-tasting toothpaste.
2.) 主+ would rather (not)+ have + p.p. 表示過去寧愿做而沒有做的事情。
e.g. the mayor (市長) would rather have handled that press conference last week.
3). 主+ would rather + v. + than 表示現在或將來某人自己“寧愿…，而不”
e.g. he would rather read than talk.
the kids would rather play outdoors than indoors.
she would rather join us in research work than go on holiday to seaside.
4). 主+ would rather + have + p.p. + than 表示過去某人自己“寧愿…, 而不”
e.g. the aged man would rather have participated in social service than amused himself by watching tv at home several years ago.
5). 主a+ would rather +主b + p.p./ were 從句一般為過去式，希望別人現在或將來做事
e.g. i’d rather you didn’t make any comment in the issue for the time being. (暫時)
6). 主a +would rather +主b+ had + p.p. 表示寧愿別人過去做sth.
e.g. david would rather that jim had called at chinese economic and trade exhibitions yesterday.
5. 其他用虛擬語氣的情況：
1). would as soon, would sooner, would prefer 表“希望或婉轉的責備”要求用虛擬語氣，謂語動詞為過去式表示現在或將來情況，謂語動詞為過去完成時表示過去情況
e.g. i would just prefer you had returned the book to him yesterday.
2). had better+ v.
3). otherwise, if only, suppose/ supposing 引導含蓄條件句表愿望，建議用虛擬語氣
e.g. if only i knew how to operate the internet phone. 要是我知道怎么打網絡電話就好了。
4). it is (high/ right/ about/ good) time + 從句用虛擬語氣（是…的時候）
it is time for sb. to do sth.
it’s time we went to bed = it’s time for us to go to bed.
e.g. it’s high time you stopped idling about and started looking for a job. 閑逛
5). but for…（要不是…）& without … 用在句首，引導虛擬條件句，時態隨句意改變
e.g. but for/ without his uncle, the kid would have been drowned in the pool.
6). if it were not for… (要不是…) 與現在相反
if it had not been for… 與過去相反
e.g. if it were not for the fact that his father is on the board directors, he would never have a job.