选A
It's +a.+to do表示做某事
等于To swim in the swimming pool is fun.或Swimming in the swimming pool is fun.
但是用It's +a.+to do句式表示强调这个“fun”.注意只能用不定式to do,不能用动名词,这是固定用法,需要记住.
选A
It's +a.+to do表示做某事
等于To swim in the swimming pool is fun.或Swimming in the swimming pool is fun.
但是用It's +a.+to do句式表示强调这个“fun”.注意只能用不定式to do,不能用动名词,这是固定用法,需要记住.