was two years ___ i joined the army.a.before b.since c.that d.after,不用排除法，

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wastwoyears___ijoinedthearmy.a.beforeb.sincec.thatd.after,不用排除法，wastwoyears___ijoinedthearmy.a.befor

was two years ___ i joined the army.a.before b.since c.that d.after,不用排除法，
was two years ___ i joined the army.
a.before b.since c.that d.after,
不用排除法，

was two years ___ i joined the army.a.before b.since c.that d.after,不用排除法，
句中before引导时间状语从句.如：
It was three years before he knew it.不知不觉中3年过去了.（三年后他才知道）.
It is（was/has been)...since...职工,时间计算一律从since从句的动作完成或状态结束时算起,如：
It's three years since he lived here.
他不在这儿住有三年了.
It's three years since I smoked.
我不吸烟有三年了.
It’s three years sinceI began to smoke.
我吸烟有三年了.

a.before 为正确答案。
本题选b.since 或将句子翻译成“我参军已经两年了。”都是错误的。
留意到了吗？It was two years 中用了一般过去时，此时从句不能填连词since。只能填before。
正确的句子意思是“两年后，我参军了。”

首先先确定动作的发生前后
句意是我加入军队已经2年了
所以先排除D
然后因为Join是瞬间性动词不能与一段时间相对所以排除B
然后 如果要用that那就是强调句了
而强调部分必须做句子中成分 明显two years不是句子成分 如果用强调句应该改成in two years啥的
所以选A...

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首先先确定动作的发生前后
句意是我加入军队已经2年了
所以先排除D
然后因为Join是瞬间性动词不能与一段时间相对所以排除B
然后 如果要用that那就是强调句了
而强调部分必须做句子中成分 明显two years不是句子成分 如果用强调句应该改成in two years啥的
所以选A

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