固定搭配(语法

用it作形式主语的that-从句有以下四种不同的搭配关系：

a. It + be +形容词+ that-从句

It is necessary that… 有必要…… It is important that… 重要的是…… It is obvious that… 很明显…… b. It + be + -ed 分词+ that-从句 It is believed that… 人们相信…… It is known to all that… 众所周知…… It has been decided that… 已决定…… c. It + be +名词+ that-从句 It is common knowledge that… ……是常识 It is a surprise that… 令人惊奇的是…… It is a fact that… 事实是…… d. It +不及物动词+ that-从句 It appears that… 似乎…… It happens that… 碰巧…… It occurred to me that… 我突然想起…… 固定句型： It takes sb some time to do sth It’s no use/no good /useless/worthwhile + doing … It’s kind/wise/clever… of sb to do sth It’s important/necessary/hard …for sb to do sth 使用定冠词的一些固定短语,如： make the most of; in the daytime; by the time; in the end; take the place of; at the moment; not in the least of(=not at all); in the distance; in the way; on the whole; on the right/left; on the other hand; on the contrary; at the same time; go to the cinema/theatre; by the way; go to the doctor’s; on the radio/phone; for the time being; to tell the truth; the other day; with the exception of (除……外) 等 in a way(在某种程度上) in the way(挡路、碍事) by sea(乘船) by the sea(在海边) at school / at the school (在校读书/在学校里) at table / at the table(在吃饭 / 在桌旁) for a moment/ for the moment(一会/暂时) have a word/have words(说句话/ 吵架)

a number of / the number of (许多/ ……的数目) on earth/ on the earth(究竟/地球上)

a second time / the second time（再一次/第二次） in red/in the red(身穿红装/负债、亏损) in future/in the future(今后/将来) in charge of/ in the charge of(负责、掌管/被掌管) in a word/in word / in words(总之/在口头上/用语言) by day / by the day (白天 / 按天算) out of office/ out of the office(下岗/离开办公室) at a time / at the time(每次 / 当时) out of question/out of the question(没问题/ 不可能) take place/take the place of(发生/取代) go to college/go to the college(上大学/到大学去) in hospital/ in the hospital(住院/在医院里) go to church/go to the church(做礼拜/去教堂) in prison/ in the prison(坐牢/在监狱里) at back of / at the back of 【在……（范围外的）后面 / 在……（范围内）后部】

欢迎阅读 特殊句型

1、spend ( waste )...(in) doing 2、be busy (in) doing

3、have difficulty (trouble , fun , pleasure , a good , hard time )in doing 4、stop \\ prevent ...(from )doing

5、There is \\ no use \\ no harm \\ no hurry ...(in)doing sth 定式,也可接动名词做宾语，但含义差别。

1、forget ,remember , regret +doing 动作已经发生；+to do 动作未发生 2、want ,need ,require + doing 表被动= to be done 注：be worth doing = be worthy to be done

3、try doing 试着做 try to do 尽力做，想要做 4、stop doing 停止做某事，(先后是一件事). stop to do 停下来做某事,(先后不是同一件事) 5、go on doing 继续敌某事，(先后 是同一件事 ) go on to do 接下来做某事，(先后不是同一件事) 6、mean doing 意味着做某事 mean to do 故意或想要做某事 7、can’t help doing sth 抑制不住、禁不住做某事 can’t help (to) do sth 无帮助、无助于做某事 8、only to do … 结果是…（出乎预料） only doing… 结果是… (必然是…) 9、prefer to do… rather than do … 宁愿 … 而不… prefer doing …to doing … would rather do … than do … would do … rather than do … 10、have nothing to do /do nothing but/except do …只好做（别无选择） enjoy doing nothing but doing … 只喜欢做… want nothing but to do … 只想做… 11、在 begin ,start ,continue 等词后可接不定式作宾语，也可接动名词作宾语，意义区别不大。 动词+ 宾语 + 带to的不定式带作宾补 ，可用于此结构的动词如下： allow, ask, advise, beg, command, cause, encourage, expect, force, get, hate, invite, like, order, permit, prefer, remind, tell, urge，want ,wish, 表示见解、看法的动词 + 宾语 + 带to的不定式. 具有这种用法的动词有: believe, consider, declare, discover, feel, find, guess, imagine, judge, suppose, think, understand， “短语动词 + 宾语 + 带to的不定式” 这类动词有arrange for, ask for, call on, count on, depend on, long for, rely on, wait for （1）You can not count on Tom to help you. （2）Chairman Mao called on us to serve the people heart and soul. 2、省to的不定式作宾补：宾补省to记11,一感二听三使役;五看一帮两均可,被动该to不能弃