1 He has no choice but _to see him A to go B go2 There was noing they could do but _for a mechanic to arriveA to wait B wait 语法上讲是 nothing.but 和no +n+but 其后要用不定式第二提为什么选B呢,答案说有时可省略,什么时候

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1 He has no choice but _to see him A to go B go2 There was noing they could do but _for a mechanic to arriveA to wait B wait 语法上讲是 nothing.but 和no +n+but 其后要用不定式第二提为什么选B呢,答案说有时可省略,什么时候

1 He has no choice but _to see him A to go B go2 There was noing they could do but _for a mechanic to arriveA to wait B wait 语法上讲是 nothing.but 和no +n+but 其后要用不定式第二提为什么选B呢,答案说有时可省略,什么时候
1 He has no choice but _to see him
A to go B go
2 There was noing they could do but _for a mechanic to arrive
A to wait B wait
语法上讲是 nothing.but 和no +n+but 其后要用不定式
第二提为什么选B呢,答案说有时可省略,什么时候省略呢?）

1 He has no choice but _to see him A to go B go2 There was noing they could do but _for a mechanic to arriveA to wait B wait 语法上讲是 nothing.but 和no +n+but 其后要用不定式第二提为什么选B呢,答案说有时可省略,什么时候
很简单,因为有句话叫“前有do,后无to ",只要前面有do,不管是它的过去式也好,还是什么形式,后面的to都省略

but做为介词意思是“除了”后接不定式to do做宾语，当它前面有do的某种形式即 do /does/did时不定式不带to .如果前面没有do的形式不定式带to .如
He did nothing but watch TV yesterday.
He had no choice but to watch TV yesterday.

不是可省略，是不能加to，nothing后跟情态动词接动词原形，but后面一定接的是动词原形

have no choice but to do sth. 固定语句，很好理解，这类句子都是but to
为什么加to呢，这句其实可以展开为have no choice to do sth.
而第二句不加to呢，因为这句主语后加了could do，这显然是不能加to的
这句可以展开围nothing they could do but do sth.
如果第二句没有t...

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have no choice but to do sth. 固定语句，很好理解，这类句子都是but to
为什么加to呢，这句其实可以展开为have no choice to do sth.
而第二句不加to呢，因为这句主语后加了could do，这显然是不能加to的
这句可以展开围nothing they could do but do sth.
如果第二句没有they could do，那即可展开为there's nothing to do sth.
只要展开能加to就加to，不能加就别加

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He has no choice but ( ) extra hours to meet the deadlineA.worksB.workingC.to workD.work He has no hair .He's b. David has made much progress this term.---,and-----A.So he has;so you have B.So has he; so have youC.So he has;so have you D.So has he;so you have_______ the last bus,we had no choice but to take a taxi.A.missing B.missed C.being missed D.having miss 1 He has no choice but _to see him A to go B go2 There was noing they could do but _for a mechanic to arriveA to wait B wait 语法上讲是 nothing.but 和no +n+but 其后要用不定式第二提为什么选B呢,答案说有时可省略,什么时候 he has no colour Has he ever been to the People's Hospital?a .yes,he soes b.no,never c.no,he has has he ever been to the People's Hospital?a.Yes,he does b.No,never c.No,he has Has he ever been to the People's Hospital?A.Yes,he does B.No,never C.No,he has He has ____（free）to make a choice He has no more than forty dollars-----------Means______a.He only has forty dollars.b.He has less than forty dollars. He has no friends.和He has no friend . 是He has no brother还是He has no brothers? He has no idea ..能不能写成He has no ideas... He has no money,too. He has no legs and no He has no legs and no choice questionso far ______of them has been struck down by sudden death.a.no one b.nobody c.not any d.none为什么,说明下. he has ( )brother at all.not,no,none,no one,为什么选b