Assessment ⅢReview weak慢的should浪费blouse足够的节约drop新鲜的thanclay弱的slow应该waste女式短上衣enoughsave(一)滴fresh比黏土;泥土帮助老人过马路做蛋糕节约用水浪费水植树保持空气新鲜干净help old people on the roadmake cakessave waterwaste waterplant treeskeep air clean and freshListen and tick √1.2.3.4.√√√√Listen and circle1. A.2. A.3. A.B.B.B.C.C.C.Look, read and match1.We should save water.2. We shouldn’t always go to work by car.3. We shouldn’t kill wild animals.4. We shouldn’t litter anywhere.5. We should plant more trees.Look, read and write1. The boy is shorter than the girl. But he is than his bike.2. The red ruler is than the green ruler. The green ruler is than the red ruler.tallerlongershorter3.The black cat is than the white cat. They are than the brown dog.biggersmallerI can do itDraw a if you can do it. Draw a if you can’t.1.Ask your friends what he/she can do for old people.What can you do for old people?I can clean their houses.2. Compare things.My pencil is longer than yours.I like to do itDraw a if you like to do it. Draw a if you don’t.1. Say what you should do.We should plant more trees.We should keep the rivers clean.We should save water.We should keep air clean.2. Chant and act.