本文目录
在英语语法中，从句引导词的作用是引导一个从句，帮助理解句子的意思。然而，在一些情况下，从句引导词可以被省略，使得句子更加简洁明了。
引导词可以省略的情况
- 当主句和从句的主语相同时，从句引导词可以省略。
例如：I know (that) he is coming. -> I know he is coming.
- 当从句作为主句的宾语时，从句引导词可以省略。
例如：He said (that) he would come. -> He said he would come.
- 当从句作为主句的表语时，从句引导词可以省略。
例如：The fact is (that) I am busy. -> The fact is I am busy.
- 当从句作为主句的同位语时，从句引导词可以省略。
例如：The news (that) she won the prize is exciting. -> The news she won the prize is exciting.
注意事项
- 当从句中有比较级或最高级形容词时，不能省略从句引导词。
例如：He is taller than (that) I am. -> He is taller than I am. (错)
- 当从句中有虚拟语气时，不能省略从句引导词。
例如：If I were (that) rich, I would travel around the world. -> If I were rich, I would travel around the world. (错)
总结
虽然从句引导词可以省略，但是需要根据具体情况来判断是否省略。在写作中，正确使用从句引导词可以使句子更加准确和流畅。
