Unit 1 Grammar and usage 课件-2022-2023学年高中英语牛津译林版（2020）必修第三册.pptxVIP

Unit 1 Nature in the balance Grammar and usage ;lead-in;;Introduction of ellipsis;Introduction of ellipsis;The use of ellipsis in English ;*什么是“省略”？;一、简单句的省略 1、省略主语：祈使句中主语通常省略，其它省略主语 多限于少数现成的说法。;3、省略作宾语的不定式短语，只保留to,但如果该宾语 是动词be或完成时态，则须在之后加上be或have：;4、省略表语(1) -Are?you?thirsty??-?Yes,?I?am?(thirsty).(2)?His?brother?isn’t lazy,?nor?is?his?sister (lazy). 5、同时省略几个成分(1)?Let’s?meet?at?the?same?place?as?(we?met) yesterday.(2)?--Have?you?finished?your?work? --(I?have)?Not?(finished?my?work)?yet.;二、并列句中的省略;1. 状语从句的省略;B.定语从句中的“主语(关系代词) + be”有时可以 省略。;1.保留不定式符号to的情况;B. 不定式做介词but，except等的宾语，且前面有 实义动词do的各种形式时，须省略不定式符号to。;1.一些常和动名词、形容词一起搭配的介词常省略， 而保留其后的动名词，常见的句型有spend/waste time (in) doing, lose no time (in) doing； have difficult/trouble (in) doing； be busy (in) doing； stop/prevent sb. (from) doing 等。;情况;使用so, not等时的省略 在英语中，可以用so, not或其他方式来省略上文或问句中的一部分或整个句子。 —Can you finish your work today? —I think so. —I don’t think so./I think not. ;;Step 3 Exploring the rules;No, I didn’t ( ). 2. You can watch it online if you want to ( ). 3. I felt worried when ( ) watching the documentary. 4. Some call for the application of modern technology, and others ( ) a change of lifestyle. 5. ( ) Got any ideas? 6. ( ) Sounds great!;conclusion;Find the mistakes and rewrite the sentences using ellipsis.;3. The Amazon rainforest is smaller now than was 50 years ago. ______________________________________ ___________________;5. When taking photos of wildlife, every effort should be made to ensure that we keep away from the animals. ______________________________________ ______________________________________ _____________________.;Jack is sharing with his classmates his experience of taking part in a forest clean-up activity. Use ellipsis where necessary. Put brackets around the word(s) tha