从句谓语发生 Wish 之后 用 Wish+ 主语 +would（could） + v.
I wish you would stay with me far a while
I wish I could fly.
It is （about. High……） time that + 从句 （V.ed）
It is high time that we began to work.
In case， lest， for fear that （should）+ V.
The mad man was out in the padded cell lest he ——himself.
A. injure B. had injured c. injured d. would injure.
Would rather =had rather， would just as soon， would sooner， would prefer 多加过去式表示尚未发生的动作 .
全部倒装 In came Jack. Now comes your turn.
Among them were two girls.
Hardly/scarcely/barely had we got on the bus when it began to rain.
No sooner had he put down the receiver than the telephone rang again.
Not until many years later did the whole truth become known.
Not only did he win the championship in the race， but he also broke the world record.
Neither my sister nor I have traveled by air.
Never， nowhere， no longer， little， feww， not…（ not a single word） no. （at no time， by no means， in no way， on no account， under/in no circumstances）
Only here can you buy fresh eggs.
To become actresses is their ambition.
Nodding often means you say“ yes.”
What I did was to give her a book.
Neither she nor I am wet.
Many a student doesn't like having to do their homework.
连接代词 who， whom， whose， what， which， whoever， whatever， which ever
连接副词 when， how， why， where， whenever， wherever
并列连词 and， but， or， so ， therefore， yet， however， nevertheless， for， hence， as well as， both……and， not only……but also， either……or， neither……nor，
从属连词 after， when， before， as， while， since， until， till， although， though， if ， even if， unless， lest， because， than， that， whether， so that， as soon as， as long as， in order that， as if， as though， in case， now that， so……that， such……that， as .as.
When we play a game， we enjoy what we are doing， —— we should not play it.
A. otherwise B. instead C. nevertheless D. either
Any，one， none， nothing， neither， either， both， all， anyone， any one， some， any， much， many
Are you sure there are not—— sharks here A.any B. some C. many D. much.
Used to ， be used to doing