Unit2 知识点和同步练习 Section A知识讲解 1.exercise 的用法 1) exercise可以作动词,意为“锻炼” 2)可以作名词,意为“运动,锻炼”,为不可数名词 do exercise=take exercise做锻炼,做运动 3)意为“习题,体操”时为可数名词,常和动词do搭配使用,且作“体操”讲时多用复数形式。 do morning exercises做早操,do eye exercises做眼保健操 2. help with housework 帮助做家务 1) help with sth. 意为“帮助做某事” 2)help sb. with sth. = help sb.(to) do sth. 帮助某人做某事 ●I often help him _____ his English. = I often help him_____English. 3)with one’s help=with the help of sb 在某人的帮助下 ●I pass the exam_____my teacher’s help. =I can’t pass the exam_____my teacher’s help. 【拓展】 ①help oneself to… 请随便吃/喝···②can’t help doing sth情不自禁做某事●③help out 帮助…解决困难, 帮助…对付 注意:housework 意为“家务劳动”,homework为家庭作业,都是不可数名词 3. sometimes 有时: 辨析:sometimes ,some times ,sometime , some time sometimes 频度副词 有时,偶尔 提问how often some times 名词短语 几次;几倍 提问how many times sometime 副词 某个时间段 提问when some time 名词短语 一段时间 提问how long 口诀记忆:分开是“一段” ,相连是“某时”;分开s是“几次”,相连“s”是有时。 4. hardly ever 几乎不 比较: hard、hardly和hardly ever 1)hard作形容词时,意为“困难的;硬的;勤奋的;严厉的;苛刻的”。 hard作副词时常用来表示程度,意为“努力地;猛烈地;剧烈地”, 位于动词之后。 2)hardly 副词,意为“几乎不”,表示否定意义,位于实义动词之前,系动词、助动词、或情态动词之后。 3)hardly ever是表频率的副词,意为“几乎不;几乎没有”,相当于almost not, seldom。 练一练:①There is _____ _____food left. 几乎没有食物剩下。②He _____ _____ . 他几乎不工作。 ③He _____ _____. 他工作努力。④It rained_____this morning. 今天早上雨下得大。 拓展:常见的频率副词有always,usually,often,sometimes,hardly_ever,never与疑问词how often 对应。表示的频率由always向never递减。在句中位于实意动词之前,情态动词( can等)、助动词(do等)、连系动词(be等)之后。但sometimes也可在句首。●Sometimes I go to school by bike. 5. how often多久一次 意为“多久一次”,常用于对时间频率提问。回答可用once/twice/three times a day(一天一/两/三次),every day(每天),sometimes(有时),never(从不),very often(经常)等。 词语 词义 用法 答语特征 how long 多久 询问时间多久 for/about+一段时间 how often 多久一次 询问动作的频率 often, twice a week等 how soon 多快,过多久 询问时间多快 in+一段时间 how far 多远 询问距离多远 ten minutes’ walk/five kilometers how many 多少 询问可数名词数量 数词+可数名词复数 how much 多少 询问不可数名词数量 数词+表示量的词+不可数名词 多少钱 询问价格 数词+钱 - is it from the village to your farm -About 10 minutes’ walk. - are you leaving for Beijing -In a few days. - do you watch TV every day -Maybe 1 hour. - do you help with housework -Every day. - is the tree -About 300 years old. - do you have dance and piano lessons -Maybe every two weeks. - housework do you do every day -Just a little. - programs did you watch -Three. - are the apples -Ten yuan. 6.free 意为“空闲的,有空的”反义词busy。 be free ... ...
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