These bananas are very cheap to buy. And I will take it.
你好！香蕉的英文是是banana仅代表个人观点，不喜勿喷，谢谢。
由于对时态没有明确要求，所以句子可以一般现在时，也可以用一般过去时，也可以用现在完成时，这里以一般现在时为例来做答I buy some bananas just now.一般疑问句为: Do you buy some bananas just now ?
These bananas were very cheap, and I bought them.因为动作"买了"是发生在过去的,所以应该用过去时;因为前后两句没有因果关系,所以不能用so,而用and 连接前后两句.
these bananas are very cheap, I bought them
Shall we buy some bananas?
原文：I bought some bananas.
改为一般疑问句：
did you buy somebananas?
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