Was it ____ he was late for school ____ made the teacher angry?此题第一空填that 还是because?
题目
Was it ____ he was late for school ____ made the teacher angry?此题第一空填that 还是because?
答案给的两空都填that,如果第一空填because,去掉it was.that 之后句子应该是什么样子呢?
答案
你得把句子结构分析明白了,先转成肯定句,然后再填,看看句子缺什么成分,强调句结构在第二个空,而第一个空是主语从句,而because不能引导主语从句
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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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