Can you describe ___ it happened?—can you describe ___it happened ---yes,i was riding on my bike ___a car knocked me down from behind选项是A.when;as B.how;as C.how;when D.how;while是名词性从句的哪一种

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Can you describe ___ it happened?—can you describe ___it happened ---yes,i was riding on my bike ___a car knocked me down from behind选项是A.when;as B.how;as C.how;when D.how;while是名词性从句的哪一种

Can you describe ___ it happened?—can you describe ___it happened ---yes,i was riding on my bike ___a car knocked me down from behind选项是A.when;as B.how;as C.how;when D.how;while是名词性从句的哪一种
Can you describe ___ it happened?—
can you describe ___it happened ---yes,i was riding on my bike ___a car knocked me down from behind选项是A.when;as B.how;as C.how;when D.how;while是名词性从句的哪一种

Can you describe ___ it happened?—can you describe ___it happened ---yes,i was riding on my bike ___a car knocked me down from behind选项是A.when;as B.how;as C.how;when D.how;while是名词性从句的哪一种
后面这个空填when,习惯用法,表示“当.这时突然.”.
选C.
前面的是宾语从句.后面的不是名词性从句.

C

C

提问部分是宾从,describe是Vt. 而后半回答的部分则是状语从句,另外when的用法是指瞬间突然发生,指那一刹那,固不可用while

选C
根据排除法 看后一句前面是持续动作 后面是短暂动作 所以用when
应该是后面跟着的是宾语从句 横线前面是动词describe

C
你能描述一下这是怎么发生的吗? 根据后面的描述性回答是how(事情发生)的回答,不是when(时间段时间点)的回答。
关于时间状语从句,要记得when后面是跟-ed形式,while后面跟-ing形式就好了。
即,正解是: I was riding on my bike when a car knocked me down from behind。或者 A car kno...

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C
你能描述一下这是怎么发生的吗? 根据后面的描述性回答是how(事情发生)的回答,不是when(时间段时间点)的回答。
关于时间状语从句,要记得when后面是跟-ed形式,while后面跟-ing形式就好了。
即,正解是: I was riding on my bike when a car knocked me down from behind。或者 A car knocked me down from behind while I was riding on my bike

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