名词性从句学案主语从句、表语从句、宾语从句、同位语从句,在整个句子中所起的作用,相当于一个名词因此,这四种从句通称为名词性从句
引导名词性从句的连接词可分为三类:连接词that,whether,if(不充当从句的任何成分)连接代词:what,whatever,who,whoever,whom,whose,which
连接副词:when,where,how,why名词性从句连接词的选用(一)that和what的选用:that和what都可引导所有的名词从句
但是,what除起连接作用外,还在名词性从句中充当成分,可做从句的主语、宾语、或表语
而that在名词性从句中不充当任何成分,只起连接作用
that/what1
______hewantsisabook
______hewantstogothereisobvious
Theresultis______wewonthegame
Thisis_____wewanttoknow
Is_____hetoldustrue
Weshouldpayattentionto______theteacherissaying
Ihavenodoubt_____hewillcome
Ihavenoidea_____hedidthatafternoon
(二)if和whether的选用不能使用if的情况:a
同位语从句d
介词后的宾语从句e
whethertodo做动词宾语不能用iftodo
whetherornot连在一起引导宾语从句时不用if
Iaskedher__________shehadabike
______wewillholdapartyintheopenairtomorrowdependsontheweather
We’reworriedabout________h