the biggest mistake made by beginners when they just first stsrted exercising is not the diet,not th
题目
the biggest mistake made by beginners when they just first stsrted exercising is not the diet,not the postures in lifting the weight,but their determination.4643 这句话中when they just first stsrted exercising is not the diet,怎么出现了两个谓语started 和is,帮讲一下这句话的语法结构
答案
when they just first started 是一个时间状语,插在里面 看清楚了!
所以只有一个位于 就是is
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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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