无论主句是陈述句还是疑问句,宾语从句都必须使用陈述语序,即“主句+连接词(引导词)+宾语从句(主语+谓语+……)”句式。
根据连接词在从句中所担任的不同成分,可分为以下四种:
(1)连接词+谓语。连接词在从句中作主语。常见的连接词有: who, what, which等。
Could you tell me who knows the answer,please?你能告诉我谁知道答案吗?
(2)连接词+名词+谓语。连接词在从句中作主语的定语。常见的连接词有: whose, what, which, how many, how much等。
He asked whose handwriting was the best in our class.他问我们班上谁的书法最好。
(3)连接词+主语+谓语。连接词在从句中作宾语、状语或表语。常见的连接词有: who(m), what, which, how many, how much, when, why, how, where, if/whether(在句中不充当任何成分)等。
He hasn't decided if he'll go on a trip to Wuxi.他还没决定是否去无锡旅行。
(4)连接词+名词+主语+谓语。连接词在从句中作宾语或表语的定语。常见的连接词有: what, which, how many, how much, how等。
Do you know which class he is in?你知道他在哪个班吗?