they are not really glasses,they are only frames.(in) different colors and shapes,这里为啥用in?
题目
they are not really glasses,they are only frames.(in) different colors and shapes,这里为啥用in?
答案
固定搭配的哟,对于颜色和形状,要用介词in
例如
Did you see the girl in blue?
你看见那个穿蓝色衣服的女孩了吗
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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