高二英语下知识点总复习教案

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　　30. With fewer bison, grass shoots were not eaten, ... 因为野牛少了，嫩草没有牛吃，... (p.47 Integrating Skills Reading 最后一段 第1行) ▲ with

　　(1) 表原因 My hand were blue with cold. 我的双手冻得发紫。The captain was beef-red with anger. 上尉气得满脸通红。The boy trembled with fear. 这男孩害怕得

　　发抖。

　　(2) (表示方式等)......地，......着，以...... You must handle this parcel with care. 这个包裹你须小心轻放。He speaks English with ease and fluency. 她说英语不费力而且流利。She performed the operation with great skill.她极为熟练地给病人施行手术。

　　(3) (表示工具，手段等)用 Did you write with a pen or pencil? 你用钢笔写还是用铅笔写? It's best to draw lines with a ruler. 用尺子划线最合适。

　　31. ... which as a result became less good for growing plants. 这就越来越不适合植物的生长。(p. 47 最后一段第4行)

　　★as a result和as a result of

　　▲as a result意为"因此""所以"，后面的内容表示结果，而as a result of则意为"因为(由于)......"，of后面的内容表示原因；请对照下列例句，辨析这两个词组之间的差别。① My car broke down and as a result, I was unable to get there. 我的车出了故障，因此我没能到那里去。② The flight was delayed as a result of fog. 因有雾，该航班误点。③ We went on walking in spite of the rain, as a result, we all got a bad cold. 我们不顾下雨继续往前走，结果都得了重感冒。④ He was late as a result of the traffic jam.由于交通阻塞，他迟到了。

　　【注】as a result后面常接一个分句，as a result of常接名词、代词或动名词。

　　32. ... , and the insects which lived on these plants died out. 原来靠那些植物卫生的昆虫也都死了。(p. 47 最后一段第3行)

　　★die out的含义

　　(1) (指家族, 物种)死光, 灭绝, 绝迹 These animals have already died out.这些动物已经绝种。

　　(2) (指习俗，做法)消失，过时 ① The old traditions are dying out. 旧传统正在消失。② That style of music died out ten years ago.那种音乐十年前就听不到了。

　　(3) 作熄灭解，out为副词。 The fire has died out. 火熄了。

　　拓展：die away 消逝，平息，静下来; die down 平息，熄灭; die for 迫切想要; die from 由于......而死; die off 一个个死掉，绝种

　　【注】 注意die out与die away的区别，后者主要指风、声、光等自然现象逐渐停止、消失。如: ① The wind has died away again. 风又停了。 ② The sound of the car died away in the distance. 汽车的声响在远处消逝。

　　【注】die out意为"消亡""灭绝"，而die off则意为"(一个一个)地死亡"。如: ① The leaves of this plant are dying off. 这株植物的叶子正在一片一片地凋谢。② The deer in the forest are dying off from disease. 森林中的鹿正因疾病而陆续死亡。

　　33. This in turn had an effect on the food supply for wolves. 这样反过来又影响了狼的食物供应。(p. 47 最后一段第2行)

　　▲in turn意为"依次""逐个地""转而""反过来"。如: ① Theory is based on practice and in turn serves practice. 理论以实践为基础，反过来又为实践服务。② We'll cross the bridge in turn. 我们将挨个过桥。③ The students answered the teacher's questions in turn.学生们依次回答老师的问题。④ The boys were summoned in turn to see the examiner. 男孩们被依次叫进去见考官。⑤ He spends too much time on maths, and this in turn affects the progress of his other subjects.他在数学上花的时间太多，这同时影响他的其他学科的进步。

　　【注】以上用法中的turn不能用作复数。

　　【注】 take turns at (或in) doing sth. 意为"轮流做某事"，相当于do sth. in turn。注意两短语中名词的单复数。① Mary and Helen took turns at sitting up with their sick mother. 玛丽和海伦轮流熬夜陪伴她们生病的母亲。② The athletes took turns in singing songs and reciting poems. 运动员们一个接一个地唱歌和朗诵诗。

　　【注】 turn也可解释为"短时间的活动", 相当于a short period of activity, turn在这里作可数名词用。如: ① I'll take a few hams round the deck before I go to bed. 就寝之前我要在甲板上散一会儿步。② I'll take a turn at the oars now if you want a rest. 如果你要休息，我来划一会儿浆。

　　拓展：take one's turn 轮班(做某事); take turns 轮流(做某事); by turns 轮流; on the turn 将好转

　　高二英语Unit17 Disabilities知识点总复习教案

　　Section I 课前准备、听力、口语

　　1. Talk about disability? 谈一谈残疾 (p. 49 Goal 1)

　　* disability和inability

　　▲ dis-和in-都是表示否定意义的前缀，但用在ability前，表示不同的意思，disability意为"残疾"，而inability意为"无能力""没办法"。请比较下列例句，注意这两个词的不同意思。① I was surprised at her inability to do things promptly. 她不能迅速处事，我感到惊异。② She is deaf，but refuses to let her disability prevent her from doing what she wants to do. 她失聪，但她不让自己的残疾妨碍自己去做想做的事。③ His inability to pay his debts made his parents worried. 他无力偿还债务使他父母亲很着急。④ Her lack of experience is a severe disability. 她缺少经验是一个严重的障碍。

　　【注】ability的形容词是able，其前也有两个否定前缀，dis-和an-表示不同的意思，disable是动词，意为"使......伤残"，而unable则是形容词，表示"不能的""不会的"。如：① That illness disabled him and left him unable to work. 那病使他残疾，不能工作。② An accident disabled him from teaching. 一次交通事故使他再也不能教书了。③ He seems unable to understand the simplest instructions. 他看来似乎连最简单的说明也不懂。④ He was unable to sleep at night because of his anxiety. 他因焦虑而晚上睡不着。

　　2. Imagine what difficulties and dangers you might face. 想像一下你可能面对的困难和危险。(p.49 Warming up Ex.1) ▲ imagine

　　(1) vt. imagine + 名词／代词／动名词／从句 ① Can you imagine a fat man like that climbing? 你能想像得出那样胖的人爬山吗? ② I can't imagine asking him for money. 我难以想像向他开口要钱。

　　注意：imagine不接不定式。只接动名词 ① It's hard to imagine a greater threat to world peace. 难以想像还有对世界和平更大的威胁。② You can't imagine how I missed the bird. 你想像不到我是多么想念那只鸟。

　　注意：imagine sb. to be结构，但不能说imagine sb. to do. 如: You imagine yourself (to be) in the place. 设想你处在这个位子上。

　　(×) I can't imagine you to do anything worse.

　　(√ ) I can't imagine you doing anything worse.

　　我难以想像你还能做更差的事。

　　(2) imagine可用于双重问句形式，其结构为特殊疑问句，imagine部分为插入部分，类似动词还有think, believe, suggest, suppose, guess等。① What do you think his explanation is? 你认为他的解释是什么? ② Which mouse do you imagine we should pick out? 你认为我们该挑哪种鼠标?

　　注意：该句型为特殊疑问句形式，所以回答时应用特殊疑问句的回答形式。-- How much do you think this car cost? 这车你认为值多少钱? -- I think it costs 4, 000 dollars. 我认为值4 000美元。

　　注意：此类动词反问句的构成有两种情况：当主句主语是第一人称时，反问根据从句；当主句主语为二、三人称时根据主句。① I think she is the best student in our class, isn't she? 我认为她是我们班最好的学生，不是吗? ② She thinks that he should have finished his work, doesn't she? 她认为他已完成了工作，是吗?

　　(3) imagine，believe，suppose，think等词在构成否定句时一般要否定前移，同时注意这些词的肯定、否定答复。① I don't think he will be the likeliest candidate for the manager of human resource department. 我认为他将不是人力资源部经理最可能的人选。② I don't think that he did the best. 我认为他并非最好。③ --Do you think Tom is the best student in our class? 你认为汤姆在我们班上是最好的学生吗? -- Yes, I think so. (肯定答复)是，我认为是。-- No, I think not / I don't think so. (否定回答)不，我认为不是。

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