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《Grammar and usage(1)： Ellipsis》新课标教案优质课下载
3) –Are you ready?
--Yes, I am (ready).
4) The river was deep and the ice (was) thin.
【规则1】在某些情况下，句子的主语, 宾语, 表语, 甚至谓语都有可能省略。
二、不定式中的省略
2. 1)—Are you going there?
--Yes, I’d like to (go there).
2) He didn’t give me the chance, though he had promised to (give me the chance).
3) –Do you want to go to the movie tonight?
--I hope to go to the movie.
4) The boy wanted to ride his bike in the street but his mother told him not to ride his bike.
5) –Are you a teacher?
--No, but I wanted to be.
6) –He hasn’t finished the task yet.
--Well, he ought to have.
【规则2】在口语中，为了避免重复，不定式可以省去和句子前面重复的动词，只保留不定式符号to, 可省略不定式作宾语的动词有，_______, ________, _______, ________, _______, ________, _______, _______, ________, _______, _________等。但如果该宾语是动词be或完成时态，则需在之后加上be 或have.
3. 1) He told me to sit down and (to) wait for a moment.
2) You are free to stay or to leave.
【规则3】当两个或多个不定式并列时，后面的不定式通常省略不定式符号to;但如果表示对比 或选择关系， 后面的不定式中的to要保留。
4. 1) I saw the boy fall down from the tree.
2) The boy was seen to fall down from the tree.
3) The slave owners made the blacks work (让黑人们工作) more than 16 hours a day.
4) They were heard to sing (唱了) an English song.
【难点1】某些感官动词或使役动词（如see, hear, notice, observe, make, have, let等）后接不定式作宾补时，不定式符号to要省略;但他们使用被动语态时，不定式符号to要保留。
三、并列句中的省略