英语名词从句中常用的引导词包括"That"、"Whether"、"Who/Whom"和"Whose"。"That"可以引导主语、宾语或表语从句,"Whether"用于表示两种可能性,"Who"和"Whom"分别用于主语和宾语从句,而"Whose"用于表示所属关系的表语从句。理解这些引导词的用法和位置对于正确使用名词从句至关重要。
1. That
"That"是最常用的名词从句引导词之一。它可以引导主语、宾语或表语从句。例如:
- 主语从句:That he is coming tomorrow is good news. (他明天来是好消息。)
- 宾语从句:I believe that he is coming tomorrow. (我相信他明天会来。)
- 表语从句:My hope is that he will come tomorrow. (我希望他明天会来。)
2. Whether
"Whether"是用来引导宾语从句的名词从句引导词。它用于表示两种可能性,如下例所示:
- I don't know whether he is coming or not. (我不知道他是否会来。)
3. Who/Whom
"Who"和"whom"是用来引导主语或宾语从句的名词从句引导词。"Who"用于主语,"whom"用于宾语,例如:
- 主语从句:Who is coming tomorrow is still unknown. (谁明天来还不确定。)
- 宾语从句:I don't know whom he is visiting tomorrow. (我不知道他明天要拜访谁。)
4. Whose
"Whose"是用来引导表语从句的名词从句引导词。它用于表示所属关系,例如:
- 表语从句:The man whose car was stolen is very upset. (那个车被偷的男人非常难过。)