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关于can't help do sth, can't help but do与can't help doing sth有很多同学搞不清楚，现作一个讲解，以期为莘莘学子拨开云雾，解除心中的疑惑。 ①.can't help doing sth 禁不住做某事；情不自禁做某事. 如：其中，help 有“克制、抑制”的意思，意思是：不能克制住做某件事，即“情不自禁”。例如： She couldn't help crying when she saw her mother.当她看到母亲的时候，禁不住哭了起来。 Having a lot of doubt, he can not help asking them question. 因为他有些疑问，他禁不住向他们提问。 Hearing at this story, I can't help myself weeping. 听到这件事，我情不自禁地哭了。 She couldn’t help smiling. 她禁不住笑了起来。 She couldn’t help envying Helen. 她不由得不妒忌海伦。 We cannot help being impressed by their kindness. 我们不由得不被他们的善良感动。 ②.can't help to do sth 不能帮助做某事，换句话说就是和help to do sth的否定句. I can't help to do it. 我不能帮忙做这事。 I can't help you (to) finish your homework. 我不能帮你做作业. He couldn't help to wash the clothes. 我不能帮忙洗衣服。 But one hundred and ninety is their final bid. I can not help it. 但190美元是他们的最终出价，我也不能做什么。(意为：没有办法) ③. can't help but do= have to do sth <省略to 的不定式> ，不得不做某事(其中，but 是介词，意为“除了这件事之外”)。 I could not but tell him about it. 我不得不告诉他这事。 She could not help but leave there. 她只好离开那里。 He couldn't help but realize that he was wrong.他不得不承认自己错了。 I cannot help but be sorry. 我不能不感到遗憾。 I can not help think the same. 我不禁也有同样的想法。 ④.have no choice but to do 只能做某事 ☆学以致用 1. He knows nothing about it, so he can't help _________ any of your work. A. doing B. to do C. being doing D. to be done 2. She can't help _________ the house because she's busy making a cake. A. cleaning B. being cleaned C. cleaned D. to clean 3. While shopping, people sometimes can't help _________ into buying something they don't really need. A. to persuade B. persuading C. being persuaded D. be persuaded 4. She can't help _________ the house because she's busy making a cake. A. to clean B. cleaning C. cleaned D. being cleaned 5. When a friend invited me to the party, I _________. A. couldn't help but go B. couldn't help but going C. can't help but go D. can't help but going 答案解析： 1.B. 2.D. 3. 此题应选C，句中的 can’t help 意为“禁不住”（注意根据句意用被动形式）。 4.A. 5.A. 解析:本题考查固定搭配，句意是：当朋友邀请我参加聚会时，我不得不去。 can’t help but do sth “不得不做某事”。答案为A。. |
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