it difficult to do sth:difficult修饰to do sth.例如：
I feel it difficult to speak English.
其中it指代speak English,difficult修饰speak English.
It is difficult to do sth:常见句型,意思是:做什么事...难.
it difficult to do sth 和it is difficult to do sth 的区别
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相关问题
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it is difficult to do sth对还是it difficult to do sth对
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是it is difficult to me to do sth
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it is difficult for sb to 和 make sb hard to do sth 有什么区别?
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difficult for sb to do sth 和difficult for sb doing sth 有什么区别
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it is difficult doing. sth造句
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怎样用 find it difficult to do sth 造句
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it's difficult for sb to do sth的英语句子
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it is adj to do sth和it is adj doing sth
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it is difficult to do 与 it is no easy thing to do 区别
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it is +名词+to do sth,it is+名词+doing sth 与it is +名词+done的区别