Unit 10 The Future
lesson 3 (一)大声读单词 1. explorer n. 探险家,探测者 (二)重点词汇 1. explorer 要点: n. (1)one that explores, especially one that explores a geographic area. 勘探者,考察者:考察的人,尤指考察某一地理区域的人 an arctic explorer 北极探险家 (2)an implement or a tool used for exploring; a probe. 勘探器,探测器:一种用于考察或勘探的器具或工具;探测器 知识拓展:explore + er (三)重点解析:情态动词表示推测 can, could, may, might, must都可以表示对发生或存在的事情的推测。其中could和might不表示过去时态,它们表达的推测的语气不如can, may强;must表示推测时,语气最强,意思是“一定,肯定”。 一般在肯定句中,表示实际上正在发生或将要发生的具体可能性时要用may,而不用can。can 表示推测多用于否定句或疑问句中。 下面各情态动词表达肯定程度的排序为: 例:he might know the answer.(很不肯定) he could be right. he would know the answer. (相当肯定) he must know the answer. (几乎可以肯定) he can’t know the answer. (几乎不肯定) 表示“绝对肯定”就不用情态动词了。 例:you know the answer.你知道答案。(肯定陈述语气) 规则总结: 1、情态动词之后必须跟有其他动词并且必用原型,情态动词不能单独充当谓语。 2、情态动词之前、之后都不能加动词不定式符号“to”。 3、情态动词本身无单、复数变化形式,但有现在式和过去式,可根据具体时态选用。但在表达肯定程度时,有些情态动词现在式和过去式都可用于现在的时间,但现在式表达肯定的程度强于过去式表达肯定的程度:he can be right.其可能性大于he could be right. 4、must无现在式和过去式的区别。在表达推测时表示对现在的推测用:he must know the answer表示对过去的推测用:he must have known the answer. 【典型例题】 1. i doubt that she will have a life in the future. a. bore b. bored c. boring 2. she may go to the moon and collect . a. rocks and dusts b. rocks and dust c. rock and dust 3. i think that your will be very useful. a. invent b. invention c. inventor 共2页,当前第1页12
Unit 10 The Future
4. the had many . a. explorer, adventures b. explore, adventure c. explorer, adventure 5. which stress of the following words is different? a. return b. exercise c. design [参考答案]1. c 2. b 3. b 4. a 5. b共2页,当前第2页12