在这里,how to do sth 也作为宾语,在此句型中,teach接的是双宾语,
宾语补足语是指在英语中有些
及物动词,接了宾语意义仍不完整,还需要有一个其他的句子成分,来补充说明宾语的意义、状态等,称为宾语补足语。例如:
I find learning swimming difficult.(difficult是形容词做宾补)
She saw the kite up and down.(up and down是副词做宾补)
Eric made the little girl cry.(cry是省略不定式to的
动词不定式)