When ia rains,I stayed at home and watched TV.这句子是否正确,正确的话stayed为什么要加ed?
题目
When ia rains,I stayed at home and watched TV.这句子是否正确,正确的话stayed为什么要加ed?
还有My uncle made a cake for me when I went to his house.是否正确,正确的话为什么会有2个过去式
答案
因为整个句子的时态是一般过去式.所以,stay要加ed.
第二个句子,My uncle made a cake for me when I went to his house.也是一般过去式,就是我去他们家,和我的叔叔为我做了一个蛋糕,都是应经发生过的事了,所以用一般过去式,动词都要加ed.
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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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