we have been good friends [ ]A;after many yearsB;many years ago C;since many yearsD;for many years必须有理由

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wehavebeengoodfriends[]A;aftermanyyearsB;manyyearsagoC;sincemanyyearsD;formanyyears必须有理由wehavebeengo

we have been good friends [ ]A;after many yearsB;many years ago C;since many yearsD;for many years必须有理由
we have been good friends [ ]
A;after many years
B;many years ago
C;since many years
D;for many years
必须有理由

we have been good friends [ ]A;after many yearsB;many years ago C;since many yearsD;for many years必须有理由
D;for many years
完成时用for+时间段 或者 since+ 时间点

D,我们已经做了好多年的朋友。(been延续性动词，用段时间)

D（延续性动作后跟一段时间）

d
a after后应该接明确的定点时间,而不是长度时间,比如after three oclock...
bc应该是since many years ago

D;for many years

D for many years.表示时间段

我确定选D，理由很简单，这句话的意思是：我们是好朋友。用的是现在完成时态，表示动作已经发生，也许还在进行中。前面的谓语动词用的是现在完成时（即have+done的形式）大家都知道：现在完成时所对应的时间状语一般是段时间，这是英语中规定语法所决定的，例如，上面的句子，其中for要是，引导时间的话，就是表示某个段时间，所谓的段时间就是表示持续性的。如：for+ 3 weeks就是三周，三周是一段时间吧...

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我确定选D，理由很简单，这句话的意思是：我们是好朋友。用的是现在完成时态，表示动作已经发生，也许还在进行中。前面的谓语动词用的是现在完成时（即have+done的形式）大家都知道：现在完成时所对应的时间状语一般是段时间，这是英语中规定语法所决定的，例如，上面的句子，其中for要是，引导时间的话，就是表示某个段时间，所谓的段时间就是表示持续性的。如：for+ 3 weeks就是三周，三周是一段时间吧，有个过程的。

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D,
have been是现在完成时，要加一段时间
A用在一般现在或过去时
B一般过去时
C成分不完整

we would have been very good We have been good friends since we met at school. Thank you!We have been so good friends什么意思 We have been good friends for five years对for five years 划线提问--- ---have you been good friends? We have been ```` we have a good we have a good We first met two years ago,and have been good friends since then.这里的have been是什么时态 是因为we are good friends所以变成have been 一般不是用have become的吗。 We have been good friends since 2 years ago.这句话对么? We have __(实际上)been good friends for about twenty years we have been good friends over twenty years.同义句转换 we have been good friend for many years goodfriends 和for many years 句子成分 We （have been） good friends since we met at school.为什么用have been?还有Why not (go) to the cinema with me?为什么用go? We have been good friends ( ) we joined the same pingpong team.A afterB beforeC sinceD until说一下为什么 We would have been very We have been moving fomward! 是have been well还是 have been good啊 we have a good time!