His brother_____ in the army for two years.A.joinedB.took partC.servedD.served for

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His brother_____ in the army for two years.A.joinedB.took partC.servedD.served for
His brother_____ in the army for two years.
A.joined
B.took part
C.served
D.served for

His brother_____ in the army for two years.A.joinedB.took partC.servedD.served for
C

A
take part in, join和join in 都有“参加”的意思,可是它们之间还有很大的区别:
take part in
take part in 意为“参加,参与(某事物或某活动,如movement, revolution, meeting, conference, conversation, war等)”。例如:
Switzerland did...

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A
take part in, join和join in 都有“参加”的意思,可是它们之间还有很大的区别:
take part in
take part in 意为“参加,参与(某事物或某活动,如movement, revolution, meeting, conference, conversation, war等)”。例如:
Switzerland didn't take part in this war. 瑞士没有参加这次战争。
How many countries will take part in the World Cup? 有多少个国家要参加世界杯?
join
join意为“参加(某组织),加入(某处任职),参加到某个人群中去,从而成为其中一员”。例如:
She joined a health club. 她参加了一个健身俱乐部。
We both joined the Labor Party. 我们俩都加入了工党。
join in
join in sth. / doing sth.意为“参加”,后面接的宾语一般是表示竞赛、娱乐、游戏等活动的名词或V-ing。例如:
Can I join in the game? 我可以参加这个游戏吗?
They all join in singing the song. 他们一起唱这首歌。
后面的served for是充当;被用作;起…的作用
不是可以用来当充军用的
例句
This box will serve for a seat.
这箱子可当作座椅。
Police: We are serve for the people.
警察:我们是为人民服务的。
serve更是错得离谱
希望对您有帮助

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延续性动词的用法很广,但常见于现在完成时中的句子中,且常与for,how,His brother joined the army two years ago. His brother has been in