put on it 和put it on有什么区别?怎么区分?为什么有put on your raincoat,又有put on it?
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put on it 和put it on有什么区别?怎么区分?为什么有put on your raincoat,又有put on it?
答案
“动词+副词”的短语动词,如bring back,look up,pick up,point out,put on,take off,take out,take up,think over,try on等,既可后面直接加宾语,如:He put on his cup.也可以把宾语(一般是代词)插入其间,如:He p...
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已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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