英语连接副词和连词的区别

你好！所谓连词就是可以直接连接两个简单句的，典型的就是and/or/but这样，当然包括so.

但副词性的连接词就不行，虽然也可以连接两个简单句，但不能直接连，需要配合句子或者加上真正的连词。比如therefore:

1、直接用于句首说结果，前面原因一句话，therefore+逗号+结果。

English is very important.Therefore，we must learn English well.

2、用在分句中，即一个句子一部分表示原因一部分表示结果。

这时一般词前要用分号（其实等于是句号），其后用不用逗号无所谓。若第二个分句前是逗号或无符号，则要注意therefore是副词，和so不一样，要保持句子完整，应用and therefore。

a、I had a headache;therefore I could not go to your party.

b、I was ill,and therefore could not come.

3、These birds are very beautiful and therefore liked by many people.

另外怎么知道一个词是连词还是副词呢？最简单的方法是查字典，比如therefore，就会标出adv.而so，则会有许多，但有个conj.表示因为，就是连词。

介词+名词(指方位的,地点的,物品)：at school，at home,on the desk

介词+动名词:He is good at playing football.

介词+表示时间的词:in the morning ; at noon

介词+人名:Except Mr.Wang,we went to see the film.

介词+名词性短语:The composition is very good except for a few spelling mistakes.

介词短语在句子中的语法功能是:

1.定语.如:The key to the door is missing.

2.状语.如:They are playing basketball on the playground.

3.表语.如:Japan is to the east of China.

4.宾语补足语.如:We consider education of great importance.

5.主语补足语.如:These machines must be kept in good cindition.

连词

连词是一种虚词， 它不能独立担任句子成分而只起连接词与词，短语与短语以及句与句的作用。连词主要可分为两类：并列连词和从属连词。并列连词用来连接平行的词、词组和分句。如：and, but, or, nor, so, therefore, yet, however, for, hence, as well as, both…and, not only…but also, either…or, neither…nor, (and)then等等。

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