英语中because 用法
why和because的用法？
why和because的用法？
用why作疑问代词,应该用because回答；在定语从句中充当原因状语成分就用关系副词why,相当于for which.
1 I had a cold. That’s why I didnt come. -------这是对的，可以接受。
2 I didn’t come. That’s because I had a cold. --------这能够理解，但不规范。正确的表达是：That I didnt come was / is because I had a cold------- 主语从句 系动词 表语从句-----这是规范的语法，但太复杂。
3 I didnt come BECAUSE I had a cold 或 I had a cold，SO I didnt come是最简单和最被认可的表达。
Because和Becauseof的差别？
1、从词性上看 because 是连词，其后接句子。 because of 是复合介词，其后接名词、代词、动名词、what 从句等。 如：I didnt buy it because it was too expensive. 我没有买是因为它太贵了。 He is here because of you (that). 他为你(那事)而来这里。
2、从用法上看 because 所引导的从句除用作原因状语外，还可用作表语。 而复合介词 because of 所引导的介词短语通常用作状语而不用作表语。 如：It is because he loves you. 那是因为他爱你。 如：He was absent because of the rain. 他因雨缺席。
3、because 比 because of 正规 Because引导的原因状语从句有时可与because of 短语转换，because of后加的原因可以为好或坏 但最正规的还是because。
because与becauseof的区别？
1、从词性上看
because 是连词，其后接句子;because of 是复合介词，其后接名词、代词、动名词、what 从句等。如：
I didnt buy it because it was too expensive. 我没有买是因为它太贵了。
He is here because of you (that). 他为你(那事)而来这里。
He lost his job because of his age. 由于年龄关系他失去了工作。
We said nothing about it, because of his wifes being there. 因为他妻子在那儿，我们对此只字未提。
He knew she was crying because of what he had said. 他知道她哭是因为他说的话。
2、从用法上看
because 所引导的从句除用作原因状语外，还可用作表语。如：
It is because he loves you. 那是因为他爱你。
而复合介词 because of 所引导的介词短语通常用作状语而不用作表语。