这儿为什么用didn't try to不用didn't have a trial呢They made no effort to hide their amusement.they didn't try to.还有这种句子我还有一个地方搞不懂,那就是try to后面是不是要加个什么,英语中到底能不能用动词

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这儿为什么用didn''ttryto不用didn''thaveatrial呢Theymadenoefforttohidetheiramusement.theydidn''ttryto.还有这种句子我还有一个

这儿为什么用didn't try to不用didn't have a trial呢They made no effort to hide their amusement.they didn't try to.还有这种句子我还有一个地方搞不懂,那就是try to后面是不是要加个什么,英语中到底能不能用动词
这儿为什么用didn't try to不用didn't have a trial呢
They made no effort to hide their amusement.they didn't try to.还有这种句子我还有一个地方搞不懂,那就是try to后面是不是要加个什么,英语中到底能不能用动词和介词来收尾,像这个I took out,这儿为什么就不能用out of,这什么时候用动词收尾什么时候用介词收尾这个其中有什么讲究么

这儿为什么用didn't try to不用didn't have a trial呢They made no effort to hide their amusement.they didn't try to.还有这种句子我还有一个地方搞不懂,那就是try to后面是不是要加个什么,英语中到底能不能用动词
trial “试验；审判”和try"尝试；试图；尽力”意思不同.
try to后面本来应该加动词原形的,这是一个try后面加不定式的结构,即：try to do sth.
在实际运用中,为了避免重复,经常出现不定式的省略,即用to来代替整个to do sth结构的情况.
如：--- Would you like to join us?
--- I'd like to (join you).
They made no effort to hide their amusement. They didn't try to (hide their amusement).这个句子就是一个不定式的省略.
要明确的是,这里to不是介词,而是不定式的标志.
一般情况下,介词收尾是不行的,因为介词后面必须加宾语,所以I took out of是不对的.但是在某些情况下,句子结尾可能出现介词.
eg: He was taken good care of. 他被很好地照顾了.(这是一个被动语态,本来是“照顾他”take good care of him,of后面的宾语him成了主语he,所以用了被动.）
This is the very book (that) I have been looking for.这正是我一直在寻找的那本书.（look for的宾语由关系代词that充当,关系代词that是用来引导定语从句的,所以要放在从句的最前面,从形式上看for后面就什么也没有了.）

这里是不定式的省略，to在这里不是介词。
补全应该为they didn't try to hide their amusement.
口语中，不定式经常承前省略。而动词和介词构成的词组一般不省略掉宾语的，为表达简洁一般用do、did等助动词直接代替整个动词词组，例如：I agree with you，but he doesn’t....

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这里是不定式的省略，to在这里不是介词。
补全应该为they didn't try to hide their amusement.
口语中，不定式经常承前省略。而动词和介词构成的词组一般不省略掉宾语的，为表达简洁一般用do、did等助动词直接代替整个动词词组，例如：I agree with you，but he doesn’t.

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这儿为什么用didn't try to不用didn't have a trial呢They made no effort to hide their amusement.they didn't try to.还有这种句子我还有一个地方搞不懂,那就是try to后面是不是要加个什么,英语中到底能不能用动词 it was sunday yesterday so you ( )to shool and you didn't.--为什么不选needn't come而用didn't needn't to come l didn't know what to say中didn't为什么用过去式 I had to tell you the truth,didn't 为什么用didn't I i___him to give up that foolish idea,but he said he wanted to have a tryA.persuadedB.didn't try to persuadeC.tried to persuadeD.didn't persuade为什么不能选A? He could have come to help us ,but_____.a.he didn't b.he hasn't c.he hadn't d.he can't为什么选a不选b如果后面写反义疑问句是不是用didn't he? Don't try to so much.Life is so years.After a didn't rein. She didn't pass the exam.Let's try to make her happy.She didn't pass the exam.Let's try to ___ ___ ___. He tried to understand the words (变为否定句)He _____ _______ to understand the words.didn't try动词不定式的否定形式不是not to 答案为什么不能是 try not i went to you home,but you weren't in.为什么要用weren't啊?用didn't 不行吗 有什么区别啊 why didn't alice come to the party last night?I don't know why she didn't为什么回答用didn't 一道高三单选题```He did all he could to try to get the car to start but it____work.A.wouldn't B.didn't C.shouldn't D.shan't我选的是B 为什么喔. you used to be short,didn't you?为什么用didn't you?you used to be short,didn't you?为什么用didn't you?不用are't you the students didn't -------- until their teacher came in这儿填stop to talk/talking还是begin to talk/talking I didn't dare open a window,dare为什么不加to Do you want to try something different,which you didn’t do before?意思 I didn't know you____books A.like B.to likeI didn't know you____booksA.like B.to like C.likes D liked为什么选D不选A? She didn't used to be fat .= She used to be fat .此处didn't已经是过去时了,为什么used不改成use?