Unit 8 Life in the future第 2 课时——阅读课后拓展课时精讲栏目导航课时过关课文重点句子的讲解和学习。 1．Heat is held under the glass and is then used as energy for each house. 热量可以被保存在玻璃下面，然后被用作每一幢房子的能源。 （1）hold v.（hold—held—held）举行；容纳 Sports meeting is held in our school every year. 我们学校每年都举行运动会。 【小试牛刀】 The hall is big enough （hold）200 people. 这个大厅足够大到能容纳 200 号人。 （2）be used as 被用作…… It is used as the source of energy. 它被用作能量之源。 to hold 【拓展】be used for… 被用来做…… be used to do sth. 被用来做某事 be used to doing sth. 习惯做某事 used to do: did sth. before, but no longer do 过去经常做…… It is no use doing sth. 做某事是无用的/徒劳的。 Knives are used for cutting things. 小刀用来切东西。 Knives are used to cut things. 小刀用来切东西。 I am used to getting up early. 我习惯早起。 He used to swim in the morning. 他以前经常在早上游泳。 【小试牛刀】 It is no use （wait）here. 等在这里是徒劳的。 waiting （3）【同根词】useful: helpful adj. 有用的 Reading is very useful in our daily life. 阅读在我们的日常生活中很有用。 【小试牛刀】 Someone came out with a most （use）suggestion. 某人想出了一条最有用的建议。 useful 2．Now, with the new technology in my CJ3, I am helping protect the environment. 现在 CJ3 有新的技术，我也为保护环境做些贡献。 （1）with prep. 有 With the help of my friends, I can finish my work on time. 在我朋友们的帮助下，我能够按时完成任务。 （2）with prep. 表达特点 The girl with brown hair is Tom’s sister. 那个棕色头发的女孩是汤姆的姐姐。 【同根词】without prep. 没有 He went to school without breakfast. 他没吃早餐就去上学了。 【小试牛刀】 （ ）The boy _______ a pair of glasses won the first prize in the competition. A．have B．with C．...
