2avoid是及物动词，可接名词、代词或动名词作宾语，不接动词不定式，可用于被动结构。You had better avoid reading in the train.句中的reading不可改成to read。
His car cost much more money than mine.他的小汽车所花的钱比我的多得多。It is even more a poem than a picture.与其说它是一幅画，倒不如说它是一首诗。
