不带to的动词不定式通常有下面十八种情况

1、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to，叫做带 to 的动词不定式(infinitive withto)，动词不定式有时不带符号 to，叫做不带 to 的动词不定式(infinitive withoutto)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 ？(3) 1 did not see her yesterday.(4) Did they take you home?(5) He d

2、oes look tired.(6) They did come yesterday.二、 与情态动词连用构成复合谓语(1) 1 can speak En glish.(2) May I come in?(3) Dare he swim across the river?(4) We must work,a nd above all we must believe in ourselves.(5) Could you do someth ing for me?(6) You shall go at once.(7) He might be worki ng in the office now.

3、(8) 1 dont think you n eed have come yesterday.(9) They should be here by now.(10) If you will go into the fields and turn over a few big ston es,you are sure to un cover a city ofan tpeople.但与情态动词 ought(to)连用时通常带 to，和 used(to)连用时必须带 to三、 在暗示感觉的动词如：see,look.at,watch,hear,liste nto,feel,notice,observ

4、e,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。(1) 1 saw her cross the street.(2) He looked at the childre n walk up the hill.(3) I watched the boy cross the road.(4) 1 heard her play the pia no.(5) He liste nd to us talk.(6) 1 felt the floor move.(7) 1 didn t notice you enter.(8) He observed so

5、me one ope n the door.(9) 1 did not perceive anyone come in.(10) He beheld her go out.但除 notice,watch 不必主动语态外，上述动词酿成主动语态时，其后的动词不定式就 不省 to(1) She was see n to cross street.(2) She was heard to play the pia no.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to(1) You may take a horse to the water

6、,but you cant make him drink.(2) Ill let him do it.(3) D ont forget to have them come.(4) Bid him go home.(5) Leave him go.动词 have 通常不必于主动语态，make 和 bid 可用于主动语态，let 偶尔也可用于主动态，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(1) Joh n was made to wash the truck for a week as a puni shme nt.(2) He was made(t

7、o) laugh.(3) The child was let(to) do it.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) 1 n ever knew him act without thinking.(2) Ive n ever known it snow in July before.(3) 1 had n ever known her ask for pity before.有时 ever 与 known 连用也有上述用法。(1)Have you ever known me tell a lie?六、在 find 后作宾语补定语的

8、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to be(1) We found the farm crops(to) do well.(2) 1 find the Chin ese people to be happy and cheerful.(3) I found this to be true in all the cities.(4) We found him (to be) hon est/dish on est.七、在 cannot but,cannot help but,can not choose but, had better(best),wo

9、uld(had)rather(sooner)than ,would assoonas 后的动词不定一般不带to(1) Whe n the country calls you for help,you cannot but go.(2) He cant help but feel sorry for her.(3) he cannot choose but obey.(4) 1 had better leave no w,or ni be late.(5) He had best buy it now while it is still available.(6) 1 would rather

10、go moun tai n climbi ng tha n just take a walk.(7) My aunt in vited me to the movies,but I said I had rather go on a pic nic with the girls.(8) 1 had sooner live on a farm tha n in the city.(9) He would sooner resig n tha n take part in such dish on est bus in ess deeds.(10) ld rather not tell you.(

11、11) He said hed sooner die tha n betray his friend.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 to(1) The soldier has no choice but to obey.(2) He did not have any choice but to obey.(3) She did nothing but clea n the dishes.(4) The childre n found there was nothing they cou

12、ld do with their mon ey,except spe nd it onsweets.(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 to)(6) He did nothing else tha n laugh.(7) I could hardly do less tha n wait.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

13、带 to(1) What we must do now is(to) find an ther pers on to help us.(2) All he could do was (to) rush into the room.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to(1)She knew that all she would have to do would be to stop crying.十、rather than 位于句首时，其后用不带to 的不定式，但 ratherthan 在句中时，其后的动词不定式可以带to，也可以不带 to(1) Rathe

14、r tha n ride on a crowded bus,he always prefers to ride a bicyde.(2) Rather tha n cause trouble,he left.(3) He prefers to rent a car rather tha n( to) have one of his own.十、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 的不定式暗示主语直接介入不定式的暗示的动作，用带to 的不定式暗示主语没有直接介入不定式

15、的暗示的动作。(1) He helped me repair the bicycle.(2) He helped me to repair the bicycle.(3) This kind of soap helps us to wash the clothes more easily.(4) The book will help you to study En glish.但在主动语态中，help 后的不定式要带 to (1)She was helped to repair her bicycle.在 help(to) do sth 不定式符号 to 可省略。He helped(to) r

16、epair the mach ine.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 般省去 to(1) Her job is to take care of the childre n and wash clothes.to，后面的不定式一(2) The girl does nt know how to read and write.但如果是在对照场合，则不省去to(1) It is better to laugh tha n to cry.(2) The purpose of new tech no logies is to make life easier, not to

17、make it more difficult.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to(1) You might do worse tha n( to) do as he does.(2) I cannot do better tha n( to)get away for the few days.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to(1) 1 know better tha n to believe him.(2) The beate n en emy had no choice tha n to surre nd

18、er.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(1)1 did not more tha n make a begi nning.十四、在 why,why not 后的不定式不带 to(1) Why spe nd such a lot of mon ey?(2) Why not join us?(3) Why dont you smoke?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(1) Does he darego?(2) We do not dare speak.(3) He did not dare go.(4) Did he dare go?(5) He dared go.(6) Dared he go?(7) He knew she dared not ope n his mouth.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) Ill 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