问题
选择题
--Who’s your Chinese teacher?
--Miss Zhang. She has taught ______ Chinese for two years.
A．our
B．us
C．ours
D．we
答案
B
teach sb sth.教某人某事。Teach后跟双宾语，用宾格人称代词，所以选B。
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--Who’s your Chinese teacher?
--Miss Zhang. She has taught ______ Chinese for two years.
A．our
B．us
C．ours
D．we
B
teach sb sth.教某人某事。Teach后跟双宾语，用宾格人称代词，所以选B。
，其中∑为曲面z=1-x2-y2(z≥0)的上侧．