Unit 8 grammar 课件 2023-2024学年人教版英语八年级下册

立足点:现在 弦外音 I have already had a big breakfast. I am full. 立足点:现在 弦外音 I have lost my key. The key isn't in his pockets now. 立足点:现在 弦外音 We have cleaned the classroom. The classroom is clean now.. I’ve lost my book Where is Mr. Xi? He has gone to Luoyang? It’s my friend Mona’s birthday tomorrow and I haven’t bought her a gift. We have bought a new car. Can I take this newspaper? Have you finished with it? I can’t find my book now. He is in Luoyang now. I don’t have a present for her now. _ _ 1.含义:现在完成时表示过去发生或已经完成的动作对现在造成的影响或结果。 I have already had a big breakfast. I have lost my key. We have cleaned the classroom. He has cleaned his shoes. They have gone out. 2. 现在完成时构成: have/has+done have/has + done “变”根据不同的人称做相应的改变 “完” 表示完成 have为助动词,帮助动词过去分词(Vp.p.) 构成现在完成时 1)现在完成时的肯定句 主语 +have/has +过去分词 注意:have (has) 为助动词,无词义。 He already had his lunch. I just finished my homework. 2)现在完成时的否定句 主语 +haven’t/hasn’t +过去分词 注意:haven’t = have not hasn’t = has not I seen the movie yet. She eaten lunch yet. 3)现在完成时的疑问句 Have/Has +主语+过去分词? you finished the work yet? she arrived here yet? they eaten supper ? 3. How to change a verb into its past participle clean –cleaned; look-looked live-lived; like-liked stop-stopped; shop-shopped study-studied; carry-carried 规则变化 直 去 双 改 3. How to change a verb into its past participle teach taught go gone meet met come come do done take taken see seen 不规则变化 见教材后不规则动词变化表 12 The Present Perfect Tense clean his shoes close the door go to bed _ _ _ The Present Perfect Tense stop raining have a shower fall down _ _ _ 4. 现在完成时的标志词 现在完成时常与already, yet, just等连用。 just, already, yet -Are Hanna and Paul here? -Yes, they have just arrived. -What time are Hanna and Paul coming? - They’ve already arrived. (before you expected) -John, this is Emma. -Yes, I know. We’ve already met. just, already, yet -Are Hanna and Paul here? -No, they haven’t arrived yet. Silvia has bought a new dress, but she hasn’t worn it yet. -Have Hanna and Paul arrived yet? -No, not yet. We are still