不带to的动词不定式通常有下面十八种情况_4219

1、学习必备欢迎下载不带 to 的动词不定式通常有下面十八种情况动词不定式通常带有符号做不带 to 的动词不定式to，叫做带to的动词不定式(infinitive with"to")，动词不定式有时不带符号to，叫不带 to 的动词不定式通常有下面十八种情况一、与助动词do 连用构成谓语动词的否定、疑问和强调形式。(1)he does not work in the factory.(2)Does she work here？(4)Did they(6)They did come二、与情态动词连用构成复合谓语(3)Dare he swim across the river?(4

2、)We must work,and(5)Could you do something for me?(6)You shall go(7)He might be working in the office now.(8)I don't think you need have come yesterday.(9)They should be here by now.(10)If you will go into the fields and turn over a few big stones,you are sure to uncover a city of但与情态动词ought(to)

3、 连用时通常带to，和 used(to) 连用时必须带三、在表示感觉的动词如：see,look.at,watch,hear,listento,feel,notice,observe,perceive(觉察，看见 ),behold （书面用语 “见到 ”）等后用作宾语补足语的动词不定。(2)He looked at the children walk up the hill.(4)I heard her(6)I felt the学习必备欢迎下载(9)I did not perceive anyone come in.(10)He beheld但除 notice,watch不用被动语态外，上述动词

4、变成被动语态时，其后的动词不定式就不省to(2)She was四、使役动词make,let,have,bid, leave(=let)后作宾语补足语的动词不定式不带(4)Bid him go home.动词 have 通常不用于被动语态， make 和 bid 可用于被动语态， let 偶尔也可用于被动态，用作主语补足语的动词不定式通常带 to ，但在 make 和 let 后有时可以不带 to(2)He was made(t(3)The child五、 never 与 know连用其后作宾语补足语的动词不定式可省to ，其时态多为完成时态。(1)I never knew him act wi

5、thout thinking.(2)I've never known it snow in July before.(3)I had never known有时 ever 与 known 连用也有上述用法。(1)Have you ever known me tell a六、在 find 后作宾语补定语的动词不定式有时可以省to，但如动词为be ，那么一般不省to ，要省一起省略(2)I find the(3)I found this to be true in all the cities.(4)We found him (to be) honest/dishonest.七、在 can

6、not but,cannot help but,can not choose but, had better(best),would(had)rather(sooner) than , would assoon as 后的动词不定一般不带to(4)I had better leave now,or I'll be late.(6)I would rather go mountain学习必备欢迎下载(7)My aunt invited me to the movies,but I said I had rather go on a picnic with the girls.(9)He

7、would sooner resign than take part in such dishonest business八、在 but(=except),besides,than后的动词不定式一般要带to ，但如果其前有作谓语的实义动词do ，则不定式不带(1)The soldier has no choice but to obey.(2)He did not have any choice but to obey.(4)The children found there was nothing they could do with their money,except spend it o

8、nsweets.(5)There seemed nothing else to do but(to)send for a doctor.(but前的实义动词do 不作谓语， but后的不定式可带to ，也可不带九、不定式作表语时，如主语部分含有实义动词do ，且句子的时态为一般现在时或一般过去时(多为 is 或was) ，不定式可以带to 也可不带to(1)What we must do now is(to) find anther person to h如句子的动词时态不是一般现在时或一般过去时，作表语的动词不定式一般要带十、 rather than位于句首时，其后用不带to 的不定式，但r

9、atherthan 在句中时，其后的动词不定式可以带to，也可以不带十一、在动词help 后作宾语补足语的动词不定式可以带to ，也可以不带，在英国英语中，多用不带to 的不定式，但在英国英语中， help+ 宾语 +不定式结构中，用不带 to 的不定式表示主语直接参与不定式的表示的动作，用带 to 的不定式表示主语没有直接参与不定式的表示的动作。(3)This kind of soap但在被动语态中，help 后的不定式要带在 help(to) do sth 不定式符号 to 可省略。He helped(to) repair the十二、两个或两个以上的动词不定式并列在一起时，第一个不定式带

10、to ，后面的不定式一般省去但如果是在对照场合，则不省去学习必备欢迎下载(1)It is better to la(2)The purpose of new technologies is to make life easier,not to十三、 than 连接两个动词不定式没有对比关系时，后一个不定式可以省(1)You might do worse than(to) do as he does.(2)I cannot do better than(t下面句子中than 连接的不是两个动词不定式than 后的动词不定式通常要带(1)I know better than to believe him.下句中的 more than(=only)可以看成复合副词，后面的动词不定式不带to十四、在 why,why not后的不定式不带to(2)Why not join十五、实义动词dare 在现代英语口语中，其所在的否定句或疑问句中，它后的动词不定式可省to ，尤其在一般过去时中(2)We do not dare(4)Did he dare十六、在口语中，特别是在美国，祈使语气谓语动词和构成谓语的不定式go 后面的不定式往往不带to(1)Go ask her.(2)I'll go see my brother.这种用法在英国口语中比较少见，一般在动词go 后