一、引导词1.that/what that在名词性从句中不担任任何成分,而what在名词性从句中要担任主语、宾语以及表语。如:They don't know——it takes to finish the job.(解析:从句中缺少宾语,所以选填what。)2.whether/if引导主语从句...一、引导词1.that/what that在名词性从句中不担任任何成分,而what在名词性从句中要担任主语、宾语以及表语。如:They don't know——it takes to finish the job.(解析:从句中缺少宾语,所以选填what。)2.whether/if引导主语从句、表语从句、同位语从句时只用whether,展开更多
文摘一、引导词1.that/what that在名词性从句中不担任任何成分,而what在名词性从句中要担任主语、宾语以及表语。如:They don't know——it takes to finish the job.(解析:从句中缺少宾语,所以选填what。)2.whether/if引导主语从句、表语从句、同位语从句时只用whether,