关于explain
B对。____you have done是explain的宾语从句。当宾语从句缺少主语,宾语或表语时,用what。这里done少宾语,所以what可用。另外:如果C中将that换成what也对,因为当explain后有间接宾语(人)和从句时,句型是: explain to sb +宾语从句。 如: I often explain to my class why we must use the word"what" in the sentence。
B对。____you have done是explain的宾语从句。当宾语从句缺少主语,宾语或表语时,用what。这里done少宾语,所以what可用。另外:如果C中将that换成what也对,因为当explain后有间接宾语(人)和从句时,句型是: explain to sb +宾语从句。
如: I often explain to my class why we must use the word"what" in the sentence。收起