Unit 4 Grammar 课件2023-2024学年牛津译林版八年级英语上册

Unit 4 Do it yourself Grammar Teaching goals 1.To learn to use imperative sentences to give instructions. （学会使用祈使句表达指令。) 2.To learn to use “should” and “had better” to give advice. （学会用should和 had better 提出建议。 ） 1. Stand up. 3. Sit down. 4. Put up your hands. 2. Jump twice , please. 5. Touch your nose. I say, you do. Can you group my instructions into two parts? 肯定形式 否定形式 *Stand up! *Turn left！ *Turn right! *Don’t move! *Don’t laugh! *Sit down, please ! When shall we use this kind of sentences?  [ 'sentəns] n.句子 Tell people what to do or tell people not to do sth Giving instructions(指令). [ɪm'perətɪv] 祈使句 They are called imperative sentences. Turn left! Don’t pick the flowers! Let me help you. Don’t be late again! Be quiet, please. Don’t park your car! Please go upstairs! Please don’t eat! work out the rules Do you find the subjects(主语)？ You You You You You You You You Rule 1: We needn't write the subject (主语) before the sentence. 1.-Jim, _____ me a tape. -All right. A. gives B. is giving C. will give D. give 2.Jim _____ his classmate some snacks. A. gives B. is giving C. will give D. give Turn left! Don’t pick the flowers! Be quiet, please. Do not park your car! Go upstairs,please! Please don’t eat! work out the rules Rule 2: We start the sentence with _______________ of a verb to tell people what to do. the base form(原形) Rule 3: We start the sentence with_____________in front of a verb to tell people not to do something. Don’t / Do not Rule 4: We put “please”___________________ of the sentence. at the beginning/end Do you know why we use “please”? To show politeness. 动词原形 Grammar ① Do型（以行为动词原形开头) Differnet types(种类) of impretive sentences ② Be型（以be开头） 肯定结构 否定结构 Don't +动词原形 Don't touch!