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▲高考英語(yǔ)語(yǔ)法必考知識(shí)點(diǎn):動(dòng)詞不定式的特殊句型
so as to
(1) 表示目的;它的否定式是so as not to do。
Tom kept quiet about the accident so as not to lose his job.湯姆對(duì)事故保持沉默是為了不丟掉他的工作。
Go in quietly so as not to wake the baby.輕點(diǎn)進(jìn)去,別驚醒了嬰兒。
(2)so kind as to ——?jiǎng)隈{
Would you be so kind as to tell me the time勞駕,現(xiàn)在幾點(diǎn)了。
▲高考英語(yǔ)語(yǔ)法必考知識(shí)點(diǎn):動(dòng)詞不定式的特殊句型
"Why not +動(dòng)詞原形"表達(dá)向某人提出建議
"為什么不……" "干嗎不……"
例如:
Why not take a holiday
干嗎不去度假
▲高考英語(yǔ)語(yǔ)法必考知識(shí)點(diǎn):動(dòng)詞不定式的特殊句型
It's for sb.和 It's of sb.
(1)for sb. 常用于表示事物的特征特點(diǎn),表示客觀形式的形容詞,如easy,hard,difficult,interesting,impossible等:
It's very hard for him to study two languages. 對(duì)他來(lái)說(shuō)學(xué)兩門(mén)外語(yǔ)是很難的。
(2)of sb的句型一般用表示人物的性格,品德,表示主觀感情或態(tài)度的形容詞,如good,kind,nice,clever,foolish,right。
It's very nice of you to help me. 你來(lái)幫助我,你真是太好了。
for 與of 的辨別方法:
用介詞后面的代詞作主語(yǔ),用介詞前邊的形容詞作表語(yǔ),造個(gè)句子。如果道理上通順用of,不通則用for。如:
You are nice.(通順,所以應(yīng)用of)。
He is hard.(人是困難的,不通,因此應(yīng)用for。)
▲高考英語(yǔ)語(yǔ)法必考知識(shí)點(diǎn):動(dòng)詞不定式的特殊句型
不定式的特殊句型too…to…
(1)too…to太…以至于…
He is too excited to speak.他太激動(dòng)了,說(shuō)不出話來(lái)。
——Can I help you 需要我?guī)兔?/p>
——Well,I'm afraid the box is too heavy for you to carry it,but thank you all the same.不用了。這箱子太重,恐怕你搬不動(dòng)。謝謝您。
(2) 如在too前有否定詞,則整個(gè)句子用否定詞表達(dá)肯定, too 后那個(gè)詞表達(dá)一種委婉含義,意 為“不太”。
It's never too late to mend.(諺語(yǔ))
改過(guò)不嫌晚。
(3)當(dāng)too 前面有only,all,but時(shí),意思是:非?!?等于very。
I'm only too pleased to be able to help you. 我非常高興能幫助你。
He was but too eager to get home. 他非常想回家。
▲高考英語(yǔ)語(yǔ)法必考知識(shí)點(diǎn):動(dòng)詞不定式的特殊句型
不定式與介詞"to"區(qū)別
to 有兩種用法:
一為不定式+動(dòng)詞原形;
一為介詞+名詞動(dòng)名詞,to 在下面的用法中是第二種,即to+ 名詞/動(dòng)名詞:
admit to承認(rèn),confess to承認(rèn),be accustomed to 習(xí)慣于,be used to 習(xí)慣于, stick to 堅(jiān)持, turn to開(kāi)始,著手于, devote oneself to 獻(xiàn)身于,be devoted to 致力于, look forward to 盼望,pay attention to 注意
介詞but,except,besides+to do(do)
在這種句型中,如介詞前有動(dòng)詞do,后面應(yīng)接不帶to的不定式;如無(wú)do,則接to不定式,即帶do不帶to, 帶to不帶do。如:
The enemy solders had no choice but to give in.
On Sunday afternoon I had nothing to do but watch TV.
▲高考英語(yǔ)語(yǔ)法必考知識(shí)點(diǎn):動(dòng)詞不定式的特殊句型
1 動(dòng)名詞與不定式的區(qū)別
動(dòng)名詞表達(dá)的是:狀態(tài),性質(zhì),心境,抽象,經(jīng)常性,已發(fā)生的不定式表達(dá)的是:目的,結(jié)果,原因,具體,一次性,將發(fā)生的
2 接不定式或動(dòng)名詞,意義相同
3在下列情況下,一般要用不定式:
①hate,like,love前有would(should)時(shí),如:I'd like to have a cup of coffee.
②當(dāng)謂語(yǔ)動(dòng)詞begin,continue,start等是進(jìn)行式時(shí),如:The students are starting to work on the difficult maths problem.
③begin,continue,start與know,understand等狀態(tài)動(dòng)詞連用時(shí),如:I soon began to understand what was happening.
⒋advise,allow,encourage,forbid,permit等動(dòng)詞后接動(dòng)名詞作賓語(yǔ),或帶不定式作賓語(yǔ)補(bǔ)足語(yǔ)。如:
Our teachers don't permit our/us swimming in the lake.
Our teachers don't permit us to swim in the lake.
4 部分動(dòng)詞后接不定式或動(dòng)名詞時(shí),意義差別較大,應(yīng)根據(jù)句子語(yǔ)境選擇使用。
①forget,remember,regret后接不定式,表示現(xiàn)在或未來(lái)的動(dòng)作,接動(dòng)名詞表示動(dòng)作已經(jīng)發(fā)生。如:
Don't forget to post the letter for me.
Have you forgotten meeting her in Beijing Airport
Remember to close the windows before you leave.
I remember writing him a letter a year ago.
We regret to tell you that all of you are not invited toattend the meeting.
They regretted ordering these books from abroad.
2017年高考英語(yǔ)語(yǔ)法必考知識(shí)點(diǎn):動(dòng)詞不定式的否定式
2017年高考英語(yǔ)語(yǔ)法必考知識(shí)點(diǎn):動(dòng)詞不定式的省略
2017年高考英語(yǔ)語(yǔ)法必考知識(shí)點(diǎn):動(dòng)詞不定式作定語(yǔ)
2017年高考英語(yǔ)語(yǔ)法必考知識(shí)點(diǎn):動(dòng)詞不定式作狀語(yǔ)
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