How long____the army?A.has he joinde B.has he taken part inC.has he been in D.has he been totake a part in与jion的区别两个是不是都是短暂的啊?

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How long____the army?A.has he joinde B.has he taken part inC.has he been in D.has he been totake a part in与jion的区别两个是不是都是短暂的啊?

How long____the army?A.has he joinde B.has he taken part inC.has he been in D.has he been totake a part in与jion的区别两个是不是都是短暂的啊?
How long____the army?
A.has he joinde B.has he taken part in
C.has he been in D.has he been to
take a part in与jion的区别
两个是不是都是短暂的啊?

How long____the army?A.has he joinde B.has he taken part inC.has he been in D.has he been totake a part in与jion的区别两个是不是都是短暂的啊?
选C.take a part in与join都是非延续性动词,不能用how long提问,排除B、C;在军队里用介词in,排除D.take a part in与join都是短暂的,take a part in后加一个组织、团体、活动的名称,如:take part in the party(入党);join后加一个群体,如:Let Tom join us for fishing.

C.has he been in (具有“延续”性的)
take part in 与 join没有“延续”性的意思,都是短暂的!

c