無論是身處學(xué)校還是步入社會(huì)，大家都嘗試過寫作吧，借助寫作也可以提高我們的語言組織能力。范文怎么寫才能發(fā)揮它最大的作用呢？這里我整理了一些優(yōu)秀的范文，希望對(duì)大家有所幫助，下面我們就來了解一下吧。

情態(tài)動(dòng)詞加完成時(shí)態(tài)的用法 情態(tài)動(dòng)詞加現(xiàn)在完成時(shí)的含義篇一

your hair wants cutting

the book is worth reading

the floor requires washing.

2．need既可以用need to be done 也可以使用need doing ，兩種形式都表達(dá)被動(dòng)的意義

the house needs painting= the house needs to be painted.

the watch needed repairing= the watch needed to be repaired.

?

情態(tài)動(dòng)詞加完成時(shí)態(tài)的用法 情態(tài)動(dòng)詞加現(xiàn)在完成時(shí)的含義篇二

1）．may/might （just） as well “不妨，最好”，與had better相近；

since the flight was cancelled， you might as well go by train.

既然航班已經(jīng)取消了，你不妨乘火車吧。相當(dāng)于you had better go by train.

2） ．cannot / can‘t…too …“越……越好，怎么也不過分”。注意這個(gè)句型的變體cannot…over…。如：

you cannot be too careful when you drive a car.駕車時(shí)候，越小心越好。

the final chapter covers organizational change and development. this subject cannot be over emphasized .

3） ．usedn‘t 或did’t use to 為used to （do） 的否定式。

4）．should 除了“應(yīng)該”一層意思外，考研大綱還規(guī)定要掌握其“竟然”的意思。如：i didn‘t expect that he should have behaved like that. 我無法想象他竟然這樣做。

情態(tài)動(dòng)詞加完成時(shí)態(tài)的用法 情態(tài)動(dòng)詞加現(xiàn)在完成時(shí)的含義篇三

1）must have+過去分詞，表示對(duì)已發(fā)生情況的肯定推測，譯為“（昨天）一定……”。如：

my pain apparent the moment i walked into the room， for the first man i met asked sympathetically：“ are you feeling all right？”

［a］ must be ［b］ had been ［c］ must have been ［d］ had to be

（答案為c）

2）can‘t / couldn’t have+過去分詞，表示對(duì)已發(fā)生情況的否定推測，譯為“（昨天）一定沒……”。如：

mary my letter； otherwise she would have replied before now.

［a］ couldn‘t have received ［b］ ought to have received

［c］ has received ［d］ shouldn‘t have received

（答案為a）

3）may / might have +過去分詞，表示對(duì)已發(fā)生的事情做不肯定、可能性很小的推測，或事實(shí)上根本沒發(fā)生，譯為“也許……”。如：

at florida power‘s crystal river plant， a potentially serious leakage of radioactive water may have been unknowingly caused by an electrician.

情態(tài)動(dòng)詞加完成時(shí)態(tài)的用法 情態(tài)動(dòng)詞加現(xiàn)在完成時(shí)的含義篇四

1） needn‘t have + 過去分詞，表示做了不必做的事，相當(dāng)于“didn’t need to do”，譯為“其實(shí)沒必要……”。如：

you needn‘t have come over yourself.

as it turned out to be a small house party， we so formally.

［a］ needn‘t dress up ［b］did not need have dressed up

［c］ did not need dress up ［d］ needn‘t have dressed up

（沒有必要穿的那么正式，體現(xiàn)是說話者的建議，實(shí)際結(jié)果是否真的穿的很正式?jīng)]有確定，答案為d）

2）should have +過去分詞，表示應(yīng)該做某事但實(shí)際上未做，譯為“本應(yīng)該……”should not + have過去分詞表示本不應(yīng)該做某事但實(shí)際上做了，譯為“本不應(yīng)該……”。如：

i regret having left the work unfinished； i should have planned everything ahead carefully.

我本來應(yīng)該事先認(rèn)真地把每件事情規(guī)劃的很好，但實(shí)際上作者還是沒有規(guī)劃好，以至工作沒有完成。

3） ought to have +過去分詞，表示動(dòng)作按理該發(fā)生了，但實(shí)際上未發(fā)生，譯為“該……”，與should 的完成式含義類似。如：

the porter ought to have called the fire-brigade as soon as he saw the fire in the stock， which went up in smoke .

4）could have +過去分詞，表示過去本來可以做但卻未做，譯為“完全可以……”。這點(diǎn)與ought/should/ have +過去分詞用法相似。如：

what you said is right， but you could have phrased it more tactfully.

5） may/ might have +過去分詞，表示過去可以做但實(shí)際未做，譯為“（那樣）也許會(huì)……”。如：

it might have been better to include more punchy statistics and photos of equipment in the introduction to further assist first-time office automation managers.