來源:網(wǎng)絡(luò)資源 2021-09-07 14:07:14
語法:被動語態(tài)被動語態(tài)的用法:
一般現(xiàn)在時
1.的被動語態(tài)構(gòu)成:is / am / are + 及物動詞的過去分詞
Our classroom is cleaned everyday.
I am asked to study hard.
Knives are used for cutting things.
一般過去時
的被動語態(tài)構(gòu)成:was / were + 及物動詞的過去分詞
A new shop was built last year.
Dinosaur eggs were laid long long ago.
現(xiàn)在完成時
的被動語態(tài)構(gòu)成:has / have + been + 及物動詞的過去分詞
This book has been translated into many languages.
Many man-made satellites have been sent up into space by many countries.
一般將來時
的被動語態(tài)構(gòu)成:will+ be + 及物動詞的過去分詞
A new hospital will be built in our city.
Many more trees will be planted next year.
含有情態(tài)動詞的被動語態(tài)構(gòu)成:情態(tài)動詞+ be + 及物動詞的過去分詞
Young trees must be watered often.
Your mistakes should be corrected right now.
The door may be locked inside.
Your homework can be handed in tomorrow.
現(xiàn)在進行時
的被動語態(tài)構(gòu)成:am / is / are + being + 及物動詞的過去分詞
Uncle Wang is mending my bike now.→ My bike is being repaired by Tom now. They are planting trees over there. → Trees are being planted over there by them.
不定式的
被動語態(tài):to + be + 及物動詞的過去分詞
二、 怎樣把主動語態(tài)改成被動語態(tài)?
There are two books to be read. → There are twenty more trees to be planted.
把主動語態(tài)改為被動語態(tài)非常簡單,可以遵循以下幾個步驟:
先找出謂語動詞;
再找出謂語動詞后的賓語;
把賓語用作被動語態(tài)中的主語;
注意人稱、時態(tài)和數(shù)的變化。
例:1. Bruce writes a letter every week. →A letter is written by Bruce every week. 2. Li Lei mended the broken bike this morning.→The broken bike was mended by Li Lei this morning.
He has written two novels so far.→Two novels have been written by him so far. 4. They will plant ten trees tomorrow.→Ten trees will be planted by them tomorrow. 5. Lucy is writing a letter now.→A letter is being written by Lucy now.
三、 使用被動語態(tài)應注意的幾個問題:
You must lock the door when you leave.→the door must be locked when you leave.
不及物動詞無被動語態(tài)。
What will happen in 100 years.
The dinosaurs disappeared about 65 million years ago.
有些動詞用主動形式表示被動意義。
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