as，for，since，because怎么区分举例子说明

Question

如题所述

Answer 1

because : 从属连词，语意强，着重直接的原因或理由，所引出的从句是全句的重心，用以回答why提出的问题。

since : 语意比because弱，但比as强，一般用于表示"由于大家已知的事实"。

as : 从属连词，语意较because, since弱，着重在主句，所表示的原因或理由是"附带的"。

for : 并列连词，语气较弱，所引出的句子一般放在后面，表示附带说明的理由或推断理由。

He is called Mitch, because his name is Mitchell.
人们叫他米奇，因为他大名叫米切尔。

I'm forever on a diet, since I put on weight easily.
我永远都在减肥，因为我很容易长胖。

As a result of the growing fears about home security, more people are arranging for someone to stay in their home when they're away.
因为越来越担心住宅安全，更多的人在出门的时候会在家中留人。

He had a great desire to have a home of his own for he had always lived with my grandmother.
他强烈渴望拥有一个属于自己的家，因为他一直和我祖母住在一起。