宾语从句语法汇总(16)

宾语从句语法汇总

B,由连词if、 whether 引导的表示“是否…”的宾语从句。Whether,if 在从句中不做句子的成分，一般情况下，whether和if 可以替换。

例：I don’t know if/whether he will come tomorrow.

The teacher asked if/whether we had finished the experiment.

l在介词后面的宾语从句中不用if引导

例：Everything depends on whether we have enough money。

l宾语从句中有or not时不用if引导.

例：I don’t know whether the movie star will come or not.

l和不定式连用作宾语时不用if引导.

例：Whether to go there or not hasn’t been decided.

C,由wh-引导的宾语从句。连接代词

who,whom,whose, what, which,和连接副词when, where, why, how 等连接的宾语从句，它们在句中即有连接从句的作用，又在句中充当句子的成分。

例：Do you know which film they are talking about? (which做定语)

I don’t know where he lives. (where 做地点状语)

二，宾语从句的语序，

宾语从句从句的语序必须是陈述语序，即连接词+主语+谓语+其他成分

例：I believe that they will come soon. He asked me whether I was a teacher. They wanted to know what they can do for us.

二，宾语从句的时态。

宾语从句的时态受主句的限制，