however与therefore区别

问题描述

精选答案

1. however主要有两种用法：

1）however = no matter how，做连词，用于引导让步状语从句

如：He can't win the race however fast he runs.

无论/不管他跑得有多快，他都赢不了这次赛跑。

2）however做副词，表示转折，意思是“然而/但是”，用在句中时必须用标点符号和其他成分隔开。

如：He is clever. However, he is very lazy.

2. therefore只能做副词，意思是“因此/所以”，其所在的句子表示结果。

它和句子其他成分隔开不隔开都是可以的。

如：He worked day and night, and therefore he was able to buy the sports car.

= He worked day and night. Therefore, he was able to buy the sports car.

他日夜工作，所以有能力买那部跑车。