Question

My brother __ down while he __ his bicycle and hurt himself.

A fell ,was riding B fell , were riding
C had fallen ,rode D had fallen ,was riding
回答 解释

Answer 1

A fell ,was riding
while引导的是延续性动作,所以要用进行时
而he是第三人称单数,要用was
摔下车是瞬间完成且是过去而非过去的过去,所以用一般过去时即可

Answer 2

My brother fell__ down while he was riding__ his bicycle and hurt himself。
答案是A.
我的哥哥在骑车时摔了，并且受伤了。
HERT 和FELL都是一般过去式，WHILE 后用过去进行时WAS RIDING...

Answer 3

A
while后应当接doing形式。
he是单数第三人称，应当接was

Answer 4

D 第一个空完成时，第二个是固定搭配while doing sth.

Answer 5

A