省略主语Hope to see you again.Havent seen you for ages.Doesnt matter.Severs you right!( I )( I )( It )( It )省略主谓或主谓的一部分 This way, please. Got to go now. Had your breakfast? Anybody want to go? Anything wrong?(You come)(Ive)(Have you)(Does)(Is there)省略宾语、表语-Do you know Miss Gao? -I dont knowWhich is better? - Its hard to tell.Tom enjoys dancing,but Peter hates.-Are you thirsty? -Yes, I am.-I am a teacher. -I am too.(her)(it)(dancing)(thirty)(a teacher)不定式的省略1.一般保留 “to”a)I asked him to see the film, but he didnt want to.b)-Will you join in the game? -Id be glad to. (see the film) (join in the game)若不定式后含有动词be的结构时， be动词要保留。 -Are you an engineer? - No, but I want to be.No, but I want to be an engineer.若不定式后面是完成时， 省略时应保留have。 - Did you tell him the news? - I ought to have, but I didnt know how to speak.I ought to have told him the newsa). I told him to sit down and (to) wait for a moment.b). To go home or to stay at school during the vacation is not decided.2.并列的不定式，前面的不定式带 “to”,后面的不 定式可省去 “to” 但如果两个不定式之间有对比关系，则不可省去 “to”.3.充当宾补的不定式在 “let,make, have, see, watch, notice, hear, feel”等使役动词和感官动词后省略 “to”,但在被动语态中 “to”还原。4.介词 “but”前若有实意动词 “do”,后面的不定式 省去 “to”.The boy did nothing but play.状语从句中的省略a) Once (he was) a teacher, he now works in a government office.b) While (I was) walking along the street, I saw Mr wang.当状语从句中的主语和主句中的主语一致时，可省略状语从句中的主语和be 动词。某些状语从句中，从句的主语是 “it”,其后的动词 “be”及其主语可一起省略Fill in the blanks with articles where (it is) necessary.Help him if (it is) possible.可以用so或not 代替上文内容a) Get up early tomorrow. If not, you will miss the first bus.b) He may not be at home then. If so, leave him a note. if you dont get up early if he isnt at home.在 “than/as”引导的比较状语从句中，常省略与主句相同的部分Im nearly as tall as he (is tall).I know you than he (knows you).I suppose it is better to be safe than (to be) sick.