Chapter 3 Camping AB（课件）新思维英语三年级下册

Camping(AB) Chapter 3, Book 3B New Welcome to English Gold What do you do when you go camping? We__________________. Ask and answer stayed in a tent What did you do yesterday？ Past tense Past tense When we talk about something that happened in the past (e.g. yesterday), we use the past tense. I played football yesterday. I cooked a meal yesterday. I planted some trees yesterday. We usually put ed on the verb to form the past form. play kick pull played kicked pulled Past tense Practice Present tense pick wash watch walk clean Past tense picked washed watched walked cleaned Practice Present tense am is are do Past tense was was were did I played basketball. What did you do yesterday? Past tense We make questions with did. Don’t change the verb after did. Now you try. I ________the dishes. What did you do yesterday? wash the dishes washed I _______ my grandparents. What _______ you do yesterday? visit my grandparents did visited He _________ pictures. did painted What ______ Charlie do yesterday? Charlie, paint pictures played hide- and-seek What did you do yesterday？ boiled water What did you do yesterday？ cooked a meal picked up rubbish watched outside What did you do yesterday？ planted trees What did you do last week? I Verb+ed last week. Grammar 动词过去式 ①一般情况加ed. 清音 /t/ 浊元/d/ t,d后面读/id/. ②以e结尾，加个d. arrive-arrived ③辅元辅，重读闭音节，双写末尾辅音， 再加ed. stop-stopped ④以辅音+y结尾的单词，去y变i，再加ed. carry-carried 规则动词过去式加“ed”后的发音规则 清辅音：送气强，声带不振动。/t/ [p]、[t]、[k]、[f]、[s]、[θ]、[tr]、[ts]、[ʃ]、[tʃ]、[h] 浊辅音：几乎不送气，声带振动。 （送气指从喉咙向口外送出气流）/d/ [b]、[d]、[g]、[v]、[ð]、[z]、[ʒ]、[r]、[dʒ]、[dz]、[dr]、[j]、[w]、[m]、[n]、[ŋ]、[l] asked cooked finished helped washed parked picked watched /t/ /d/ arrived played called cleaned enjoyed boiled watered used /id/ painted planted needed He walked to school last week. He did not walk to school last week. Past tense We use did not /