常用来引导同位语从句的引导词主要包括:that、whether等。
that 在限制性定语从句中既可指人又可指事或物。在下列情况下,只能用that 来引导定语从句: 1. 先行词是all , much, few, little, everything, anything, nothing 等不定代词时。例如: Is there anything that you want to buy? 2. 先行词被all, few, little, much, ev...
2. as if, because 也可引导表语从句。 It looks as if it’s going to rain. It was because I got up late. 3. 在非正式文体中,引导表语从句的that可以省略。如: The trouble is (that) he is ill 注意:在表语从句中,当reason做主语时, 引导词只能用that,不能用beca...
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