to /tə, tu; 强 tu:/ I. prep. 1.朝…方向；向；对；至： walk to school 走向学校；fall to the ground 落到地面；point to sth.指向某物；on the way to the station 在前往车站的路途中 2.到(某时)： We will change the date to Feb. 28th. 我们将把日期改到2月28日。 3.对(于)，对…来说： He’s always polite to people. 他对人总是很讲礼貌。 4.表示对比关系：Your skill is superior to mine. 你的技术比我高。He’s junior to me.他比我小。［考句］The ratio of the work done by the machine to the work done on it is called the efficiency of the machine.机器所做的功与对机器所做的功的比率称为机器的效率。（the ratio of A to B或the ratio between A and B为“A与B的比率”） 5.跟动词搭配，详见 speak, say, give, apologize, devote, owe, write, talk, reply 等。 ‖II.不定式符号(用来引导不定式，在句中作主语、宾语、表语、补语、定语和状语)：It would be safest to wear boots.最安全的办法还是穿靴子。I want to know the answer. 我想知道答案。What I like is to swim in the sea.我喜欢的是在海里游泳。They supposed her to be their daughter. 他们推测她是他们的女儿。He is always the first one to come and the last one to leave. 他总是第一个到，最后一个离开。To do good work, one must have the proper tools.要把活干好，必须要有合适的工具。She’s too weak to do the job.她身体虚弱，不能做这项工作。