这句话当中的it是作什么语法成份?
题目
这句话当中的it是作什么语法成份?
In England,it is not only the rich who can take their children to the seaside; if a fatory worker or a bus driver,a street cleaner or a waiter wants to take his wife and children to Southland ormargate,he is usually quite able to do so.
答案
强调句来的
举一反三
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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