职称英语考试基础词汇重点解析45
职称英语考试基础词汇重点解析
现在进行时(The Present Continuous Tense)
1. 形式:
1) 现在进行时由助动词am, is, are+现在分词构成。第*人称单数用am,第三人称单数用is,其他人称一律用are。
2) 现在分词由动词原形+ing构成,如learning, making, stopping等。
2. 基本用法
4) 用在此刻正在进行的动作。
e.g. What are you doing here?
5) 表示现阶段正在进行的动作,而此刻并不一定在进行。
e.g. We are doing an experiment this month..我们这个月在做一个实验(说话时不一定在做实验)。
3. 现在进行时态的否定结构:
e.g. We are doing an experiment this month. – We are not…
4. 现在进行时态的疑问句结构:
e.g. We are doing an experiment this month. – Are you doing…
练习与体会:
(综合A/B级:Importance of services)
These people argue that manufacturing jobs, which have been the economic foundation of America’s middle class, are vanishing. They claim that factory workers are being replaced with a host of low-wage earners.
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