英语因果关系表达

问题描述:

英语因果关系表达
this is the reason why we succeed
the reason why we succeed is because
because sth is why we succeed.
上述三种表达对错如何?

第一种是对的,第二种不要后面的because就是the reason why we succeed is sth...第三种应该错了没这样的表达方式