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英語(yǔ)五級(jí)寫(xiě)作語(yǔ)法指導(dǎo)

時(shí)間:2021-06-30 12:56:20 寫(xiě)作 我要投稿

英語(yǔ)五級(jí)寫(xiě)作語(yǔ)法指導(dǎo)

  原因解釋型

英語(yǔ)五級(jí)寫(xiě)作語(yǔ)法指導(dǎo)

  1. 給出一個(gè)事實(shí),要求解釋它的原因。

  陳述這個(gè)事實(shí) As is know by all, ……

  Among countless factors which contribute to XXX, there exist three most conspicuous ones:

  One of the primary causes is that…

  XXX also results from…

  … is responsible for xxx, as well.

  To put all into a nutshell, I draw the conclusion that A,B and C are three main contributors to XXX

  2. What should we do? How do something influence our lives? what are the characters of something.

  背景描述

  There are numerous approaches to solving…/impacts on sth. /characteristics of… , and I would explore the most conspicuous ones there.

  One of the primary method, to my mind, is that…

  one of the primary impact, to my mind, is that…

  one of the primary characteristic, to my mind, is that…

  a more subtle point which we must consider is that…

  In addition/ furthermore ……

  In conclusion, Taking into account of all these methods/ affects / aspects, we may reach the conclusion that……

  混合條件句

  主句與從句的動(dòng)作發(fā)生在不同的時(shí)間,這時(shí)主,從句謂語(yǔ)動(dòng)詞的`虛擬語(yǔ)氣形式因時(shí)間不同而不同,這叫做混合條件句。

  If you had asked him yesterday, you would know what to do now.

  (從句與過(guò)去事實(shí)相反,主句與現(xiàn)在事實(shí)相反。)

  If it had rained last night (過(guò)去), it would be very cold today (現(xiàn)在).

  情態(tài)動(dòng)詞的語(yǔ)法特征

  1) 情態(tài)動(dòng)詞不能表示正在發(fā)生或已經(jīng)發(fā)生的事情,只表示期待或估計(jì)某事的發(fā)生。

  2) 情態(tài)動(dòng)詞除ought和have外,后面只能接不帶to的不定式。

  3) 情態(tài)動(dòng)詞沒(méi)有人稱(chēng),數(shù)的變化,即情態(tài)動(dòng)詞第三人稱(chēng)單數(shù)不加-s。

  4) 情態(tài)動(dòng)詞沒(méi)有非謂語(yǔ)形式,即沒(méi)有不定式,分詞,等形式。

  比較can和be able to

  1)can、could表示能力;可能(過(guò)去時(shí)用could), 只用于現(xiàn)在式和過(guò)去式(could)。be able to可以用于各種時(shí)態(tài)。They will be able to tell you the news soon.他很快就能告訴你消息了。

  2)只用be able to

  a. 位于助動(dòng)詞后。

  b. 情態(tài)動(dòng)詞后。

  c. 表示過(guò)去某時(shí)刻動(dòng)作時(shí)。

  d. 用于句首表示條件。

  e. 表示成功地做了某事時(shí),只能用was/were able to,不能用could。

  He was able to flee Europe before the war broke out.

  = He managed to flee Europe before the war broke out.

  注意:could不表示時(shí)態(tài)

  1)提出委婉的請(qǐng)求,(注意在回答中不可用could)。

  -- Could I have the television on?

  -- Yes, you can. / No, you can’t.

  2)在否定,疑問(wèn)句中表示推測(cè)或懷疑。

  He couldn’t be a bad man.

  他不大可能是壞人。

  比較may和might

  1)表示允許或請(qǐng)求;表示沒(méi)有把握的推測(cè);may放在句首,表示祝愿。

  May God bless you!

  He might be at home.

  注意:might表示推測(cè)時(shí),不表示時(shí)態(tài)。只是可能性比may小

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