because 的使用

经常听老师讲不要 because 开头

且看下面一句

I like Vancouver. The summer is nice.

其问句是

why do you like Vancouver?

中式思维一般回答

Because the summer is nice.

但这样回答只把原因状语从句抛出来了，没有主句，所以是错的。

正确回答应该是
Because the summer is nice, i like Vancouver.

更优：主句放前，逗号去掉

I like Vancouver because the summer is nice.

如果非得把中间放逗号，弃用 because, 选择 for
I like Vancouver，for the summer is nice.