Grammar 一动词不定式动词不定式由“to+动词原形”构成,可以在句中作主语、宾语、表语、定语、状语、补足语等,但不能作谓语。动词不定式To do that sort of thing is foolish。I want to see you this evening.All you have to do is to finish it quickly.We found a house to live in.She came here to study English. I warned the patient not to eat cold water after the operation.主语宾语表语定语状语宾补作主语Tomasteraforeignlanguageisreallyimportantnowadays.Togiveupsmokingisright.1.当今掌握一门外语真的很重要。2.放弃吸烟是对的。作宾语Fred didnt have any money, so he decided to look for a job.He promised not to te