Unit 3 Online travel
the dish tastes nice.
5. 一些動詞如sell, write, wash等，當它們被用作不及物動詞來描述主語特征時，常用其主動形式表達被動意義，主語通常是物。
sell well 暢銷 write well 書寫流利
wash well 清洗容易
（七）雙賓語的被動語態
一）含有復合賓語的主動句變被動句，賓語變主語，賓補保留在動詞之后。
1. we call him jim.
he is called jim.
2. he painted the table green.
the table was painted green.
3. we asked the teacher to explain the sentence again.
the teacher was asked to explain the sentence again by us.
二）make, hear, see, watch, feel, let, have等動詞在主動語態的句子變被動語態時，其后作賓補的不定式必須加上to
1. his mother made him do his homework again.
he was made to do his homework again by his mother.
2. she saw a man go into the room.
a man was seen to go into the room by her.
3. we often hear her sing english songs.
she is often heard to sing english songs (by us).
（八）不及物動詞帶介詞和介詞賓語, 在變為被動語態時, 仍然要帶上介詞, 如:
1. they talked about the matter last night.
the matter was talked about by them last night.
2. we must think over what he said.
what he said must be thought over.
3. his classmates often made fun of him.
he was often made fun of by his classmates.
4. the students listen to the teacher carefully in class every day.
the teacher is listened to carefully (by the students) in class every day.
5. xiao ming looked after his sister yesterday.
his sister was looked after (by xiao ming) yesterday.
6. you should take care of the things.
the things should be taken care of.
（九）怎樣把主動語態改成被動語態?
把主動語態改為被動語態非常簡單，可以遵循以下幾個步驟：
1. 先找出謂語動詞；
2. 再找出謂語動詞后的賓語；
3. 把賓語用作被動語態中的主語；
4. 注意人稱、時態和數的變化。
【典型例題】
1. bruce writes a letter every week.
2. li lei mended the broken bike this morning.
3. he has written two novels so far.
4. they will plant ten trees tomorrow.
5. lucy is writing a letter now.
6. you must lock the door when you leave.
【答案】
1. a letter is written by bruce every week.
2. the broken bike was mended by li lei this morning.
3. two novels have been written by him so far.
4. ten trees will be planted by them tomorrow.
5. a letter is being written by lucy now.
6. the door must be locked when you leave.
（十）使用被動語態應注意的幾個問題：
1. 不及物動詞無被動語態。
what will happen in 100 years.
the dinosaurs disappeared about 65 million years ago.