How long have you been collecting shells教案
八 年級導學案
姓名學科王
班級學科王
審核人簽字學科王審核日期
課題
unit6 how long have you been collecting shells?課型
新授課
執(zhí)筆者
參與者
教學目標： 1.key vocabulary: collect ; shell; marathon 2.key structures: —how long have you been skating? —i’ve been skating for five hours. 3.train students’ abilities of listening and speaking. 教學重點：key vocabulary and key structures/listening practice. 教學難點：how to improve students’ listening ability. 課前準備：teacher: a recorder students: 認真做好預習交流作業(yè)。 teaching steps： step 1 greetings and revision step 2 1a group work step 3 1b step 4 2a step 5 1c pair work 預習交流 根據(jù)句意及首字母提示補全單詞，并翻譯句子。 1. how long h you been at this school? 2. his job is c empty bottles. 3. she has many colorful s . 4. was this your first skating m ? 5. she can s very well. 6. she has been skating s she was four years old. 知識梳理 1. –how long have you been skating? 你滑多長時間了？ -i’ve been skating for five hours. 我已經滑了五個小時了。 【用法】 （1）這是一個現(xiàn)在完成進行時的句子，現(xiàn)在完成進行時通常要和表示一段時間的狀語連用，表示在這段時間內，該動作一直在進行。其結構為“have/has been +v.-ing+表時間段的狀語”。 （2）for five hours表示“五個小時”，介詞for后跟時間段，表達某動作已延續(xù)多久了，故該動作應用延續(xù)性動詞。（在肯定句中）。 （3）how long意為“多久”，在此句中，用以提問時間的長短，除此之外還可以提問物體的長度。how long 用以提問“（時間）有多久”，其答語必為延續(xù)性動詞。how long 針對動作提問的，即句中的動詞必為延續(xù)性動詞，因為只有延續(xù)性動詞才能延續(xù)一段時間，成為表狀態(tài)的形容詞或介詞短語。 how long has elizabeth been a nurse? ---- __________ a since 1992 b. seventeen years ago. c. in 1992 2.-i’ve been skating since i was seven years old. 【用法】此處的since用作連詞，后面跟時間點，可以和完成時連用。意為“自……以來”，其從句為一般過去時，主句為現(xiàn)在完成時，表達主句的動作從過去某一時刻開始一直延續(xù)到現(xiàn)在，本句的主句為現(xiàn)在完成進行時。 【辨析】since 與 for since除可作連詞、引導時間狀語從句外，還可做介詞，意為“自從……,自……以來”，其后接具體的某一過去時間，不能與一段時間，表達某一動作延續(xù)的時間有多長；既可用于現(xiàn)在完成時、現(xiàn)在完成進行時中，也可用于一般現(xiàn)在時，一般將來時及一般過去時中。 jack has studied chinese in this school ________the year of . a. since b. for c. in d. on 合作探究 ⅰ.用for或since填空,并翻譯句子。 1.they have been working ten hours. 2. kate has been studying 8:00 pm. 3. the old man has been living in the old house 1990. 4. she has been studying english she was five. 5. the twins have been waiting for you an hour ago. ⅱ.pair work（1c） 課后作業(yè) p51.ⅲ 完型填空，翻譯短文。（english exercise-book）教學反思：