She encouraged me to try again.
她鼓励我再试一遍。
They forbade her to leave the house./She was forbidden to leave the house.(较常用)
他们不允许她离开房间。/不许她离开房间。
Nothing would induce me to do business with them.
什么也不能诱使我同他们打交道。
They persuaded us to go with them.
他们说服我们同他们一起走。
They are training these dogs to sniff out drugs.
他们正在训练这些狗嗅出毒品。
C show/teach/tell+how
show 与不定式连用时要加 how:
He showed me how to change a fuse.
他给我示范怎样换保险丝。
tell how +不定式(= instruct教):
He told me how to replace a fuse.
他教我怎样换保险丝。(他给我必要的知识或说明。)
tell+宾语+不定式(= order命令):
He told me to change the fuse.
他叫我换保险丝。相当于:
He said,‘Change the fuse. ’
他说:“换一换保险丝。”
teach how(教……如何):
要表达教某人(如何)游泳、跳舞、打字、骑马等时可以说:
He taught me how to light a fire without matches.
他教我如何不用火柴就能点火。
对比较普通的技能提问时虽可以使用how,但how常可以省略:
He taught me to ride.
他教我骑马。
teach+宾语+不定式(不与how连用)也可以意指教导或训练某人以某一方式行事:
He taught me to obey all commands without asking questions.
他教我毫无疑义地服从命令。
D remind, show, teach, tell后面也可以接 that结构:
He reminded me that the road was dangerous.
他提醒我道路危险。
He showed me that it was quite easy.
他向我表明这是很容易的。
注意: tell+ that从句的含义不同于tell+不定式:
He told(= ordered) me to go.
他叫我走。
He told(= informed) me that I was late.
他告诉我说我迟到了。
E request 后面也可以接that+ should结构,这主要用于被动语态:
He requested that the matter should be kept secret.
他请求对这件事保密。
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[Amber demo]
245 表示知道和思想等的动词之后的不定式
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A 在 assume, believe, consider, feel, know, suppose, understand 等之后可接宾语+ to be:
I consider him to be the best candidate.
我认为他是最佳人选。
但that+普通动词的结构比这常用得多:
I consider that he is the best candidate.
(译文同上。)
宾语+不定式与 think, estimate和 presume 等动词连用是极少见的。这种表达方法常用that从句来代替:
I think that he is the best player.
我认为他是最好的演奏家/演员/运动员。
It is estimated that the vase is 2,000 years old.
据估计这个花瓶有两千年历史。
B 然而,如果这些动词是以被动形式出现的,那么它们后面常常带不定式而不是带that结构:
He is known to be honest.相当于:
It is known that he is honest.
众所周知,他是个老实人。
He is thought to be the best player相当于:
It is thought that he is…
人们认为他是最好的演奏家/演员/运动员。
This vase is estimated to be 2,000 years old.
据估计这个花瓶有两千年历史。
C 注意suppose的被动态时往往有责任或义务之意:
You are supposed to know the laws of your own country.
你应该懂得你们自己国家的法律。相当于:
It is your duty to know/You are expected to know…
你有义务懂/人们认为你该懂……
D 在这些动词后面也可以用不定式的进行式:
He is thought to be hiding in the woods.
人们以为他正躲在森林里。(人们认为他正躲着。)
He is supposed to be washing the car.
他应该在洗车。(他该正在洗它。)
E 如果想到的是早先发生过的动作,则用不定式的完成式:
They are believed to have landed in America.
人们相信他们在美洲上了岸。(据信他们已登上了。)
supppose+不定式的完成式不一定有责任或义务之意。
They are supposed to have discovered America.相当于:
It is thought that they did.
人们认为是他们发现了美洲。
但 You are supposed to have read the instructions(你应已看过操作说明)通常意味着你本应看过。
(关于动词的被动式之后的不定式结构,另参见第306节。)
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[Amber demo]
246 不带to的不定式
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A can,do,may,must,shall,will之后接不带to的不定式:
They could do it today.
他们可以今天做这件事。
I may as well start at once.
我还不如马上就动身。
He will probably object.
他可能会反对。
B need和dare之后也接不带to的不定式,但它们不作为情态动词而是同助动词do/did或will/would连用时除外:
You needn’t say anything.
你不必说什么。
但是说:
You don’t/won’t need to say anything.
你不需要/将不需要说什么。
I dared not wake him.
我不敢叫醒他。
但是说:
I didn’ t/wouldn’ t dare(to) wake him.
我没敢/不敢叫醒他。
理论上,在最后一个例句中要求用to,但实际上常被省略。按语法规则来说,如果dare和used用为助动词,它们就像大多数助动词一样后面接不带to的不定式;如果它们用为普通动词并与do/ did等连用,就像普通动词一样后面接带to的不定式。
C feel, hear, see和 watch:
I heard him lock the door.
我听见他锁了门。
I saw/watched him drive off.
我看见他开车走了。
但see和hear在被动语态的句子中要与带to的不定式连用:
He was seen to enter the office.
有人看见他进了办公室。
He was heard to say that…
有人听见他说过……
但feel,hear,see和watch经常是与现在分词连用:
I heard them shouting.
我听到他们在大声喊叫。