to 表示你动作的接受者,如：You gave the book to me to还有一个用法就是与动词一起使用构成不定式 .在某一钟点之前.例如:it is five to four现在是三点五十五分另外 to 还用来表示连个不接壤的地方 如 Taiwan is to the east of Fujian.1.for 可当作为如 I like some bread and milk for breakfast.2.还可表示原因如 Thanks for helping me.3.还可用来表一段时间如 I have been studying English for five years.4.还可在 buy等词后带双宾语I want to buy a photo album for my father.5.可作 为了.对于.讲Let me pick it up for you.Playing computer games is bad for your eyes.6.可作 适于 讲 用在 It's time for+名词7.作 支持 讲是 against 的反义词 with 一般表示从属关系 如 China is a great country with long history.还可用来表示原因注意 with后无论接什么 谓语动词的形式只看主语 不看with所接的.1.of可表示非生物的所有格 如China and India are of the third world.2.可表示颜色 年龄等These flowers are of different colors.3.结构 one of the+复数可数名词 some/most of the +复数可数名词或不可数名词.4加 the+最高级如 His temper is of the quickest.5.结构 It's+adj.+of sb.to do sth.意味某人做某事太.了如 It's kind of you to help me你帮助我简直太好了动名词（V-ing)是动词的名词名词形式,动词无法作宾语、定语等,而动名词可以.如A sleeping boy 一个睡着的男孩My hobby is collecting stamps.
