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it is easy to do sth 什么句型 it is not easy to do和doing的区别 easy to do 还是doing somebody is easy to do something easy does it 意味 take it easy 文法 take it easy means easy does it meaning 

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用it is easy to do something造句 lt is easy to do sth造句 请用it’s easy to 这个句型造句 it is necessary to do sth造句 it is one's duty to do造句 it seems adj to do sth造句 itnecessarytodo造句 it seems+adj+to do sth造句 it is essential for sb to do造句 it seems to sb that造句 

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