九年级英语上册_Unit_5__Lesson25_ l课件_冀教版 -.ppt

Lesson 25 Let’s Do an Experiment Revision 匆忙 _______ 突然 _______　小心…… ______　 safe (adj) _______ n 安全 _________ adv ugly (adj) _________ (adj) 更丑的 __________　（adj) 最丑的 strange (adj ) ________ n 陌生人 hang ( v) _________ 过去式 ____ 过去分词 care (n)________　adj 粗心的 ______ 细心的 they (pron) _______ 宾格形式______ 反身代词 knife （n) ________ 复数形式 burn (v) _________　过去＿＿＿过去分词 New words loud adj/ adv speak louder frightened adj frighten v board n awake adj wake v –woke –woken musician n music n perhaps adv = maybe hardly 几乎不 must 不得不，必须； 肯定是 can’t 肯定不是； 不能，不会 freeze v 结冰，凝固 froze – frozen lie- lay – lain- lying 平躺 Expressions do an experiment turn …upside down =turn over cover … with put on take … off the force of… get wet strong enough pour out be sure of a piece of cardboard I don’t think so . conclude I think so. correct stay in the jar method the scientific method Let’s try it . the air pressure Language points: 1.Maybe the cardboard will hold the water. maybe adv 也许，大概 （位于句首，中， 单独使用） may be 作谓语 可能是…… Eg: ______ you’re right. It _______ in your pocket. _______ she is a teacher. = She _________ a teacher. 当表示“也许是……”时，可以相互转换. Language points: 2.So what have we discovered? discover 发现，找到，发觉 invent 发明 create 创造出 ，将原材料制成新产品 Eg:They _______ the beach by chance. Who _______ the telephone? The new factory is expected to ______ more than 400 new jobs. Language points: 3.I am so sure of my theory that Brian can do the experiment over your head . be sure of (抽象 ) / be sure about (具体) +n/v-in