James came back home early last night.It was not yet eight o'clock_______he arrived home.A.before B.that C.when D.until 选什么呢?为什么不能选d呢?

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James came back home early last night.It was not yet eight o'clock_______he arrived home.A.before B.that C.when D.until 选什么呢?为什么不能选d呢?

James came back home early last night.It was not yet eight o'clock_______he arrived home.A.before B.that C.when D.until 选什么呢?为什么不能选d呢?
James came back home early last night.It was not yet eight o'clock_______he arrived home.
A.before B.that C.when D.until 选什么呢?为什么不能选d呢?

James came back home early last night.It was not yet eight o'clock_______he arrived home.A.before B.that C.when D.until 选什么呢?为什么不能选d呢?
答：选c
解析：句意为：-Jack昨晚回来得很早-----------他到家时还不到8点.­
考生的思维定势有二：首先,认为是在考查强调句.同学们熟记了强调句型：It be+被强调部分+that/who+其余部分.而判断一个句子是否为强调句型,只需将其中的It is/was和who/that去掉,如果句子结构完整通顺,则是强调句型,否则就可能是其他语法形式.如果选b项,去掉It was和所填的that后,时间状语前缺少介词,句法错误,因此该句不是强调句型,而是状语从句.­
其次,认为是在考查it…before…句型.It is+时间段+before句型的肯定式表示“过多久……才、就”；否定式表示“不久……才、就”.此题如用before罗辑不符,故答案选B.­
还有before ,是跟的时间段,when 跟的是时间点

答案是C.when
这是表示时间点的状语从句
选项D.是not....until 句型 直到。。。才。。。 一般只能用于非延续性动词 故错

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