was showed是什麼時態

具體用法：

不及物動詞無被動語態。

What will happen in 100 years.

The dinosaurs disappeared about 65 million years ago.

2.有些動詞用主動形式表示被動意義。

This pen writes well.

This new book sells well.

3.感官動詞或使役動詞使用省略to的.動詞不定式，主動語態中不帶to ，但變爲被動語態時，須加上to 。

例：make somebody do something→somebody+ be +made to do something

see somebody do something→somebody +be +seen to do something

A girl saw my wallet drop when she passed by.→My wallet was seen to drop by a girl when she passed by.

The boss made the little boy do heavy work.→The little boy was made to do heavy work by the boss.

4.如果是接雙賓語的動詞改爲被動語態時，直接賓語(物)作主語，那麼動詞後要用介詞，這個介詞是由與其搭配的動詞決定。

He gave me a book.→A book was given to me by him.

He showed me a ticket.→A ticket was shown to me by him.

My father bought me a new bike. →A new bike was bought for me by my father.

5.一些動詞短語用於被動語態時，動詞短語應當看作一個整體，而不能丟掉其中的介詞或副詞。

We can't laugh him. →He can't be laugh by us.

He listens to the radio every day. →The radio is listened to by him every day.

The nurse is taking care of the sick man. →The sick man is being taken care of by the nurse.