重庆市江津市第六中学高中英语 Unit 2 Protecting Our Home Period four导学案 重庆大学版选修6.doc

重庆市江津市第六中学高中英语 unit 2 protecting our home period four导学案 重庆大学版选修61vt.（1）warn sb. of/about sth. 提醒、警告某人注意某事（2）warn sb. not to do sth. 警告某人不要干某事=warn sb. against doing sth. （3）warn that clause 提醒某人.vi.（4）warn against doing sth. 告诫某人不要做某事they warned him of the danger. 他们警告他有危险。he warned me not to go out alone at night.=he warned me against going outside alone at night.= he warned that i couldnt go outside alone at night.他提醒我晚上不要单独出去。the manager warned against smoking in the building.经理告诫说不准在大楼内抽烟。2（1）base on “以为根据/基础”，用法应是 base a on b如： edison based his ideas on scientific experiment. 爱迪生的想法是建立在科学实验的基础上的。（2）be based on “以为根据/基础”用法是a be based on b what he said is based on fact. 他所说的话是以事实为根据的。 the story is based on real life.那故事是根据现实生活而写的。【知识运用】the tv play, _on real life, will be popular among people.a. based b. was based c. basing d. being based3risk （1）名词 n. 危险,风险 he was ready for any risks. 他准备冒一切风险。 （2）at (the) risk of 冒.的风险he saved my life at the risk of losing his own. 他冒着生命危险救了我的性命。（3）at risk遭受危险the disease is spreading,and all children under 5 are at risk.疾病在蔓延，凡5岁以下的孩子都有被传染的危险。（4）及物动词 vt. risk+sth/doing使遭受危险,冒.的风险the brave man risked his life in trying to save the child. 那位勇敢的冒着生命危险试图救那孩子。 they risked losing their jobs. 他们冒着失去工作的风险。4. depend on/upon（1）依靠，依赖=rely on/uponchildren depend on their parents for food and clothing. 小孩依赖他们的父母供给衣食。（2）由.而定， 取决于 it depends on the weather whether we can go out for a picnic.我们是否能去野餐取决于天气。（3）it all depends./that depends. 看情况而定can you finish the work before sunday?你能在星期天前完成这项工作吗？ it all depends. 这要看情况而定。5. protect. against/from sth保护.不受.的伤害/袭击he took an umbrella to protect himself against/from the rain.他带了一把伞以免淋雨.【联想】prevent. (from) doing 阻止.做某事=stop. (from) doing=keep. from doingnothing can prevent him (from) going. 什么都不能阻止他前往。【区别】keep. from doing sth 阻止.做某事keep. doing sth 使.保持状态, 使.一直进行sorry to keep you waiting.对不起,让你久等了。【知识运用】