名词性从句名词性从句1
名词性从句考点1、引导词that与what;that与whether;if与whether;what与how等的区别;2、名词性从句的时态和语序问题;3、名词性从句的语气问题;4、同位语从句与定语从句的比较区别
1、名词性从句的引导词问题问题1:Greatchangeshavetakenplaceinthatschool
Itisnolonger______itwas20yearsago,_____itwassopoorlyequipped
(05安徽卷)A
what;whenB
that;whichC
what;whichD
which;thatA前句考查的是that与what的区别
that在名词性从句中不充当任何成分,而what可充当名词性的成分
前句的表语从句中还缺少表语,故只能用what
后句是定语从句,修饰20yearsago,所以须用when
问题2:1)Whatthedoctorsreallydoubtis_____mymotherwillrecoverfromtheseriousdiseasesoon
(上海2001)A
whetherD
why2)Elephantshavetheirownwaytotelltheshapeofanobjectand_______itisroughorsmooth
(05天津卷)A
whetherC
whatCB在名词性从句中表示“是否”这一概念时,连词if一般只能引导宾语从句,而题1是表语从句,故不能选B;注意doubt的用法,如果是肯定句,用whether,如果是否定句,用that
宾语从句中,以下情况只用whether不用if:①与or连用时;②后接不定式短语时;③在decide;besure等动词后
问题3:______leavestheroomlast