1. It's+adj.+for sb.+to do sth. 對(duì)某人來(lái)說(shuō)做某事怎么樣，
如：
It is dangerous for children to play in the street. 孩子們?cè)诮稚贤媸呛芪ｋU(xiǎn)的。
2. It's time for sth. 是干某事的時(shí)間了；
It's time(for sb.)to do sth.該干某事了。
如：
It's time for the meeting. 該開(kāi)會(huì)了。
It's time for us to go to school. 我們?cè)撋蠈W(xué)了。
3. It takes sb. some time to do sth.
做某事花某人一些時(shí)間。
sb. spend some time/money on sth./(in)doing sth. 某人花時(shí)間(金錢(qián))在某事上/花時(shí)間(金錢(qián))干某事。
sth. cost sb. some money 某事花某人一些錢(qián)。
pay some money for sth.為某事(物)付錢(qián)。
如：
It took me two hours to write the letter. 寫(xiě)這封信花了我兩小時(shí)的時(shí)間。
He spends half an hour(in)reading English every morning.他每天早上花半小時(shí)讀英語(yǔ)。
He spends one hour on the housework every day. 他每天花一小時(shí)做家務(wù)。
The bike cost me 500 yuan. 這輛自行車(chē)花了我500元。
I spent 500 yuan on the bike. 我買(mǎi)這輛自行車(chē)花了500元。
I paid 500 yuan for the bike. 我花了500元買(mǎi)這輛自行車(chē)。重要提示：
cost主語(yǔ)一般為物；spend, pay主語(yǔ)一般為人。例 中it用作形式主語(yǔ)，動(dòng)詞不定式為真正主語(yǔ)。4. too+形容詞/副詞+to do... 太……以致不能……?
如：
I was too excited to say a word.
我激動(dòng)得一個(gè)字也說(shuō)不出來(lái)。
Tom is too short to reach the apple.
Tom太矮了,拿不到那個(gè)蘋(píng)果。
重要提示：
這是一個(gè)否定句型，不能在不定式前加not，可以用so... that...結(jié)構(gòu)改寫(xiě)。例句 可以改寫(xiě)成：I was so excited that I couldn’t say a word.
5. so that...以便/以致……?
如：
They studied hard so that they could pass the exam. 為了能通過(guò)考試,他們學(xué)習(xí)很努力。
They started early so that they caught the early bus. 他們起得很早,結(jié)果趕上了早班車(chē)。
重要提示：
在例句中，是引導(dǎo)目的狀語(yǔ);在例句中，是引導(dǎo)結(jié)果狀語(yǔ)。一般來(lái)講，若從句中含有情態(tài)動(dòng)詞，則so that引導(dǎo)的為目的狀語(yǔ)。若無(wú)情態(tài)動(dòng)詞，則so that引導(dǎo)的為結(jié)果狀語(yǔ)。
6. 祈使句+then/or/and+陳述句?
如：
Work hard,and/then/and then you will live a happy life. 努力工作，你就會(huì)過(guò)上幸福的生活。
Hurry up,or we will be late for school. 快點(diǎn)，否則我們上學(xué)就遲到了。
注意：以上句型都可以用條件狀語(yǔ)從句來(lái)改寫(xiě)。例句可以改寫(xiě)成：If we don't hurry up, we'll be late for school.
7. 表達(dá)建議的句型，
如：
Why not do...? 為什么不……?
Let's do... 讓我們做……吧。
Shall we do...?我們做……好嗎?
Would you like/to do...?
你想要(做)……嗎?
Will you please do...?
請(qǐng)你做……好嗎?
What(How)about doing...?
做……怎么樣?
had better do/not do sth.
最好做/不做某事。
如:
—Why not go and ask our teacher? ——為什么不去問(wèn)問(wèn)老師?
—Good idea! Let's go. ——好主意!走吧!
—Shall we go out for a walk? ——我們?nèi)ド⒉皆趺礃?
—No,Let's go to the zoo. ——不,我們?nèi)?dòng)物園吧。
Will you please fetch some chalks for me?請(qǐng)你給我拿些粉筆,好嗎?
—What about singing an English song? ——唱首英文歌曲怎么樣?
—Wonderful! ——好極了!
You had better put on the coat when you go out.你出去時(shí)最好把外套穿上。
8. I don't think his answer is right.
我認(rèn)為他的答案不對(duì)。
I can't believe she is right.我相信她是不對(duì)的。
You don't think they will come tomorrow,do you?你認(rèn)為他們明天不會(huì)來(lái),是嗎?
重要提醒：
think,believe,suppose等接賓語(yǔ)從句，表示否定時(shí)要否定主句。變?yōu)榉匆庖蓡?wèn)句時(shí)，若主語(yǔ)是第一人稱，簡(jiǎn)短問(wèn)句與賓語(yǔ)從句的主謂語(yǔ)保持一致，若主句主語(yǔ)是其他人稱，與主句主謂語(yǔ)保持一致。例句變?yōu)榉匆庖蓡?wèn)句應(yīng)為：I can't believe she is right,is she?
9. such+名詞性詞組+that...；so+形容詞/副詞+that... 如此……以致……
如：
She is such a good teacher that we all love her.她是一個(gè)好老師,我們都愛(ài)她。
It was such a hot day that they didn't go out for a walk as usual.這么熱的天氣,他們沒(méi)有像往常一樣去散步。
重要提醒：
(1)“such+a(an)+形容詞+名詞+that...”，可以改寫(xiě)成“so+形容詞+a(an)+名詞+that...”，例句可以改寫(xiě)成：She is so good a teacher that we all love her.
(2)在“such+形容詞+名詞復(fù)數(shù)或不可數(shù)名詞+that...”結(jié)構(gòu)中，形容詞如果是many/few或much/little時(shí)，用so不用such，即：so+many/few+可數(shù)名詞復(fù)數(shù)+that... ，so+much/little+不可數(shù)名詞+that...。
如：
There are so many people in the room that I can't get in.
房間里人太多,我進(jìn)不去。
The man has so much money that he can buy a car.
那人很有錢(qián),他能買(mǎi)一輛小汽車(chē)。10. there be...;either... or...;neither... nor...;not only... but also...
如：
There is a pen and two pencils in his pencil-box. 他的鉛筆盒里有一支鋼筆和兩支鉛筆。
Not only you but also I want to go travelling. 不但你，我也想去旅游。
Either you or I am leaving for Shanghai. 要么你去上海，要么我去上海。
Neither you nor he is right. 你和他都不對(duì)。
Both Jack and Tim are English. Jack和Tim都是英國(guó)人。
重要提示：
當(dāng)這幾個(gè)句型連接主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞的人稱和數(shù)要遵循“就近原則”。對(duì)比both... and...來(lái)記憶，both... and...連接主語(yǔ)時(shí)視為復(fù)數(shù)。
11. enough+名詞+to do... 有足夠的……做某事；
形容詞/副詞+enough+to do... 足夠……做某事。
如：
There is enough room to hold these people to have a meeting. 有足夠的地方容下這些人開(kāi)會(huì)。
The boy is strong enough to carry the heavy box. 這個(gè)男孩兒力氣夠大,能搬動(dòng)這只箱子。
重要提示：
enough作副詞修飾形容詞或副詞時(shí)，放在所修飾詞的后面，句子可以用so... that...句型改寫(xiě)。例句可以改寫(xiě)為：The boy is so strong that he can carry the heavy box.
12. enjoy doing sth.喜歡(愛(ài)好)做某事；
like to do/like doing sth.喜歡做某事。
如：
Do you enjoy listening to music? 你喜歡聽(tīng)音樂(lè)嗎?
I like to swim in the swimming pool. 我喜歡在游泳池中游泳。(喜歡到某一具體的地方游泳)
I like swimming. 我喜歡游泳。(只講喜歡這項(xiàng)運(yùn)動(dòng))