用 have has there is there are 作文:描述自己的卧室
题目
用 have has there is there are 作文:描述自己的卧室
答案
就是问你卧室里面都有什么,have和has要注意主语是第几人称,另外两个注意后面是单数还是复数就行啦.例如:I have a suitable bed in my room.It has three legs.There is a table for reading.There are some chairs ...
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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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