Since与because的区别

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since和because均为从属连词，引导时间状语从句。表示已经知道的原因时用since，即某种原因在说话人看来已经很明显，或已为听话人所熟悉，通常被置于语句之前。because引导的从句表示直接而明确的原因和理由，表示按因果关系的推断，语气很强，用来回答why的问题，一般位于主句之后。

since的用法

（1）Since the rain has stopped,let’s go for a walk.

既然雨停了，我们出去散散步吧。

（2）Since we are young,we shouldn’t be too afraid of making mistakes.

因为我们还年轻，所以不应该太害怕犯错误。

（3）Since you are free today, you had better help me with my mathematics.

既然今天你休息，你最好帮我补习数学。

because的用法

（1）We couldn't go out because these robber are still outside.

我们不能出去，因为这些强盗还在外面。

（2）I do it because I like it.

我做这件事是因为我喜欢。

（3）You can trust those products because the quality never varies.

你可以信赖那些产品，因为它们的质量从来不变。

（4）We went by bus because it was cheaper.

我们乘公交汽车去，因为这样便宜一些。

Describe a time when you helped a person You should say： When it was

Whom you helped with Where you helped him/her


Why you helped How you helped

And explain how you felt about it after helping 范文:

讲述帮助妹妹进行环保宣传的经历。在周末的时候，参与了分发宣传单页的活动，沟通了其他环保

措施的重要性。妹妹还组织了一次环保知识竞赛，我参与了部分后勤工作。妹妹衷心地感谢姐姐的

贡献，让我感受到参与活动不仅加深了和妹妹的感情，而且对环保特别有益。 I would like to talk about the time when I helped my sister to advocate （宣传） the environment actions

in her community. Last summer holiday, I stayed at my uncles’ home for two weeks since they invited

me. During that time, I accompanied my sister a lot in her environmental protection campaign （环保活

动）in the neighborhood.

During the weekend, we dispatched（分发） the environmental friendly leaflets（环保宣传小单页） to

pedestrians in the gardens, talked to them about the carbon dioxide reduction （二氧化碳减排） effect of

taking public transportation instead of private vehicles（私人交通）, reminded them of the importance of

saving water. In the afternoon, my sister organized a quiz（竞赛） for the residents （住户）in the community, and the person who answered the most environmental protection questions wins the prize of

two boxes of milk. Since it was summer and the weather was really hot, after talking and standing in the

sun for half a day, people all became really tired. Then I quickly went home, brought all the watermelon

we prepared to the residents. People were all happy to eat all the melons and praised my sister for good organization.

Even though I was really tired at that weekend, I felt vey pleased that I could contribute to my sister’s

little environmental protection campaign. It not only brought us closer（让我们更亲密）, but also can

benefit the environment to some extent.

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