無論是身處學校還是步入社會，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。范文怎么寫才能發揮它最大的作用呢？這里我整理了一些優秀的范文，希望對大家有所幫助，下面我們就來了解一下吧。
情態動詞加完成時態的用法 情態動詞加現在完成時的含義篇一
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 ，兩種形式都表達被動的意義
the house needs painting= the house needs to be painted.
the watch needed repairing= the watch needed to be repaired.
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情態動詞加完成時態的用法 情態動詞加現在完成時的含義篇二
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.
既然航班已經取消了，你不妨乘火車吧。相當于you had better go by train.
2） ．cannot / can‘t…too …“越……越好，怎么也不過分”。注意這個句型的變體cannot…over…。如：
you cannot be too careful when you drive a car.駕車時候，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“應該”一層意思外，考研大綱還規定要掌握其“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。
情態動詞加完成時態的用法 情態動詞加現在完成時的含義篇三
1）must have+過去分詞，表示對已發生情況的肯定推測，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，表示對已發生情況的否定推測，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，表示對已發生的事情做不肯定、可能性很小的推測，或事實上根本沒發生，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.
情態動詞加完成時態的用法 情態動詞加現在完成時的含義篇四
1） needn‘t have + 過去分詞，表示做了不必做的事，相當于“didn’t need to do”，譯為“其實沒必要……”。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，體現是說話者的建議，實際結果是否真的穿的很正式沒有確定，答案為d）
2）should have +過去分詞，表示應該做某事但實際上未做，譯為“本應該……”should not + have過去分詞表示本不應該做某事但實際上做了，譯為“本不應該……”。如：
i regret having left the work unfinished； i should have planned everything ahead carefully.
我本來應該事先認真地把每件事情規劃的很好，但實際上作者還是沒有規劃好，以至工作沒有完成。
3） ought to have +過去分詞，表示動作按理該發生了，但實際上未發生，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際未做，譯為“（那樣）也許會……”。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.
