一般见到的是:
It looks like rain.
It looks like snow.
请问像下面如此用动名词可以吗?
It looks like raining.
It looks like snowing.
从理论上说,look like rain, look like snow 这种表达是可以说成 look like raining, look like snowing 的,由于 like 是介词,后面接动名词,是介词的基本使用方法。只是用动名词raining, snowing 的使用方法不如用 look like rain, look like snow 普通而已。
至于 look like 后能否接动名词,《牛津英语使用方法指南》第三版有如此一句剖析:
look like...ing... 看样子晚上要下雨。
《牛津英语使用方法指南》觉得 look like 后面接动名词是非正式使用方法,所以比较少见,所以 look like raining, look like snowing 也比较少见。