but+we+have+at+least

@督汪1168:什么时候but后面加do 什么时候加to do -
赵怎19557467702…… 其实总结起来就是前有do后没to.一.当主句前面存在do 动词的任何形式(did. does. will do. have done, had done....), 介词but 后就省去to 例如:I can't do anything but sleep I did nothing but wait He had nothing to do but cry.二.而前面是其他动词的,没有do 动词的任何形式,就要加to了.例如:I had no choice but +to sleep 也就是加to do 希望对你有帮助~~~

@督汪1168:was / were + to have done的用法 -
赵怎19557467702…… 一般说来,“be to do” 这个结构有两种语法意义,其一是连系动词be+动词不定式做表语,其二是be to是一个独立词汇单位,具有情态含义,可以把它叫做情态习语(modal idiom). 一、be +动词不定式, 不定式做表语,表示主语和表语在...

@督汪1168:but是连词 +at是介词?可以? -
赵怎19557467702…… But 连词+at介词,这种情况的存在只适用于象你举的例句那样的情况,才存在.在You still have to hide the note from theft,but at lease you don't have to hide a whole bunch of gold from theft.中,at lease是一个固定的短评,作状语.又如You don't have to hide the note from theft,but at that time you should.在这个句子中,at主要作用也是起到了构成“at that time"这个短语的作用.这短语作状语.

@督汪1168:英语情态动词与助动词 -
赵怎19557467702…… 助动词与情态动词最主要的区别之一是,助动词本身没有词义,而情态动词则有自己的词义,能表示说话人对有关动作或状态的看法,或表示主观设想.例: 情态动词没有人称变换,后面接原形. What have you been doing since? (构成完成...

@督汪1168:情态动词+have done的意义有哪些?
赵怎19557467702…… 情态动词+have done的意义如下: could have done本能够做某事而没做 must have done 肯定是做过某事 can/could not have done 不可能做过某事 may/might have done 可能已经做过某事 ought have done本应该做某事而没做

@督汪1168:英语问题每个题详解一下 勾出 语法和 句型及句型的意思用法(thanks)) -
赵怎19557467702…… 答案为 BDBD第一题:题目应该是:....but now it ( ) as a a hospital1、there used to be (过去有...)2、be used as 被作为....

@督汪1168:We - ----- - have proved great adventurers, but we have done the greatest march ev -
赵怎19557467702…… 答案B may not+have+动词+ed形式,意为“可能不”,用于对过去或已经发生的事进行猜测.needn't have+动词+ed形式表示“不需要”,表示过去不需要做某事.shouldn't+have+动词+ed形式表示本来不应该做而做了某事.mustn't不与have+动词+ed形式连用,只与动词原形连用,表示“禁止,不要”.

@督汪1168:.But for their help,we - ----the program in time. -
赵怎19557467702…… 选择D 译为“要不是有他们的帮助,我们就不会及时完成这项工程.” 这是对过去的虚拟,表示与过去的事实相反的假设时,条件状语从句的谓语动词用“had+过去分词”,主句中的谓语动词用“would(should, could, might)+have+过去分词” ...

@督汪1168:But for their help, we - ---- - the program in time.
赵怎19557467702…… 答案D 考查虚拟语气.根据But for their help要不是他们的帮助;可知这是一个与过去事实相反的含蓄的虚拟语气句,后面主句应该使用情态动词+have done;句意:要不是他们的帮助,我们不能够及时完成这项计划.

@督汪1168:We r brothers, but we have little (few) in common.请问是用little 吗 -
赵怎19557467702…… few, a few, little, a little 虽然都表示“少”,但few, a few是可数的, little, a little是不可数的.其中few表示否定

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