哈尔滨有多少个粮食:英语问题请教!!!

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-----Could you let me know _____ yesterday?
-----Because the traffic was heavy.
A.why did you came late
B.why you came late
C.why do you come late
D.why you came late
请讲明理由!!!

选B.why you came late
这是典型的宾语从句。后面的从句要用陈述句,这是宾语从句的规定。

B

bd

BD

BD 第一,宾语从句中用陈述句语序,
第二,时间是过去,用过去时