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：
①I(mǎi)t's time for the meeting. 該開(kāi)會(huì)了。
②It'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：
① 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。
② He spends half an hour(in)reading English every morning.他每天早上花半小時(shí)讀英語(yǔ)。
③ He spends one hour on the housework every day. 他每天花一小時(shí)做家務(wù)。
④ The bike cost me 500 yuan. 這輛自行車(chē)花了我500元。
⑤ I spent 500 yuan on the bike. 我買(mǎi)這輛自行車(chē)花了500元。
⑥ 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 ① 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：
① I was too excited to say a word.
我激動(dòng)得一個(gè)字也說(shuō)不出來(lái)。
② 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 ① 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：
① 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。
② 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①中，是引導(dǎo)目的狀語(yǔ);在例句②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：
①Work 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。
②Hurry 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②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:
①—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!
②—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。
③Will you please fetch some chalks for me?請(qǐng)你給我拿些粉筆,好嗎?
④—What about singing an English song? ——唱首英文歌曲怎么樣?
—Wonderful! ——好極了!
⑤You 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(chēng)，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(chēng)，與主句主謂語(yǔ)保持一致。例句①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：
①She is such a good teacher that we all love her.她是一個(gè)好老師,我們都愛(ài)她。
②It 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①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：
①There are so many people in the room that I can't get in.
房間里人太多,我進(jìn)不去。
②The 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：
①There 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。
②Not only you but also I want to go travelling. 不但你，我也想去旅游。
③Either you or I am leaving for Shanghai. 要么你去上海，要么我去上海。
④Neither you nor he is right. 你和他都不對(duì)。
⑤Both 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(chēng)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：
①There 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)。
②The 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②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：
①Do you enjoy listening to music? 你喜歡聽(tīng)音樂(lè)嗎?
②I 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)
③I like swimming. 我喜歡游泳。(只講喜歡這項(xiàng)運(yùn)動(dòng))
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