I am reading a story book 这里考的是现在进行时态 谓语动词要用 动名词形式i 意思是 我正在读一本故事书...
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在以下六种情况下多用who ：①关系代词在从句中做主语 A friend who helps you in time of need is a real friend .②先行词为those ,people 时 Those who were either fools or unfit for their offices c...
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C seen 这是：When it is seen from a distance的省略. 不是正在进行的动作,所以进行时不合适....
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Since 有两种意思："因为..." 和 "自从..." For 有两种意思："为了..." 和 "因为..." , 一个加名词 一个加动词 (for另外还有一些短语用法) With 没有 "因为" 的意思....
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