仁爱英语九年级U2T2课件.ppt

Unit2Topic2 All these problems are very serious. (1)We should do everything we can_________( protect )the environment. (2) Ten years__________ (pass)since my father ________ (go) to America. (3) Have you noticed the man __________( follow) us? (4) His father ______________ (die) for many years. (5)His father ______________ (die) many years ago . (6) Nobody would like __________ (see) waste paper ________ (lie) around in the classroom. (7) The answer is _________ (complete) right. (8) There is a special kind oxygen ____________ (call) ozone. While I was walking down the street just now, I couldnt see anything. “当... ...的时候” While she was listening to the radio, she fell asleep. 她听着收音机睡着了。 · while ?连词 · while ?连词 “虽然，尽管” While it was late, he still went on working. 虽然很晚了，但他还在继续工作。 · while ?连词 “只要” While there is life, there is hope. 只要有生命，就有希望。 · while ?并列连词 “然而”（表示对比） He is strong while his brother is weak. 他很强壮，然而他的兄弟却很瘦弱。 · while ?名词 “一会儿” She rested for a while. 她休息了一会儿。 People have cut down too many trees. · cut 相关词组 cut down 砍倒；减少 cut up 切碎 cut off 切断；切除 cut ...into 把...切成... 1. They the big tree. 2. He the apple halves. 3.The electricity had been . 4.He the meat on his plate. cut down cuts into cut off cuts up A lot of rich land has changed into desert. · change into 变成... ... Ice has changed into water. 冰变成了水 A lot of rich land has changed into desert. 1. a lot of , lots of , plenty of =many/much (可不可都行） 2. a great deal of=much 3. a (large) number of=many Trees can stop the wind from blowing the earth away. They can also stop the water from washing the earth away. Trees can stop the wind from blowing the earth away. They can also stop the water from washing the earth away. · 阻止... ...做... ... stop... ...(from) prevent... ...(from) keep... ...from They stop her (from) cutting the trees. They prevent her (from) cutting the tree. They keep her from c