助动词和情态动词改错问题4Had Aristole asked his wife to keep her mouth open while he counted her teeth,he (could avoid) the mistake of thinking that women have fewer teeth than men.括号里的是错的,可是为什么应该改成have avo

什么是助动词和情态动词? 助动词和情态动词改错问题4Had Aristole asked his wife to keep her mouth open while he counted her teeth,he (could avoid) the mistake of thinking that women have fewer teeth than men.括号里的是错的,可是为什么应该改成have avo 助动词和情态动词的区别 有哪些助动词和情态动词 情态动词和情态助动词有什么区别 英语情态动词 will 和助动词will怎么分辨什么时候是情态动词什么时候助动词 MUST既是情态动词又是助动词?情态动词和助动词又有什么区别 助动词和情态动词改错问题1They should (use) coal,but they had to use oil instead,because there remained little coal.括号里的是错的.为什么说should have used,而不说could use呢?说should have used的话是说“应该用了”, 助动词和情态动词改错问题5We requested that the superintendent of the building clean up the storage room in the basement so that the children (had) enough space for their bicycles.括号里的是错的.应该改成might have,为什么不 情态动词与情态助动词 情态动词属于助动词么 情态助动词就是我们常说的情态动词,我想问个英语的问题 情态动词与情态助动词 情态动词属于助动词么 情态助动词就是我们常说的情态动词 助动词中的情态助动词和情态动词的具体区别有哪些?(在用法方面) nor+主语+ 助动词/be动词/情态动词和neither+主语+ 助动词/be动词/情态动词有什么区别啊 so+主语+系动词/助动词/情态动词和so+系动词/助动词/情态动词+主语有什么区别? 助动词后能跟情态动词吗?为什么?情态动词后能跟助动词吗？为什么?一共两个问题 助动词和情态动词改错问题3When a friend gave John a ticket to the game,he couldn't help but (going).括号里的是错的.要把going改成go,为什么呢? 情态动词属于助动词吗? 助动词就是情态动词吗 什么是情态动词,助动词,副词和介词短语?