（）in the chair is Mr.Smith,a professor who will give us a lecture on how to learn...
题目
（）in the chair is Mr.Smith,a professor who will give us a lecture on how to learn...
前面应该填seated 还是seating
我觉得是表状态 但是句首一般是ing吧?
答案
用seated.在你的句子里面,逗号前正常语序完整为 Mr.Smith is seated in the comfortable chair.其结构总是sb.be seated somewhere.
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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