[英语角]英语知识

1 一般现在时的用法

1） 经常性或习惯性的动作，常与表示频腮度的https://www.baidu.com/s?wd=%E6%97%B6%E9%97%B4%E7%8A%B6%E8%AF%AD&连用。https://www.baidu.com/s?wd=%E6%97%B6%E9%97%B4%E7%8A%B6%E8%AF%AD&： every…, sometimes, at…, on Sunday。例如：

I leave home for school at 7 every morning. 每天早上我七点离开家。

2） 客观真理，客观存在，科学事实。例如：

The earth moves around the sun. 地球绕太阳转动。

Shanghai lies in the east of China. 上海位于https://www.baidu.com/s?wd=%E4%B8%AD%E5%9B%BD%E4%B8%9C%E9%83%A8&。

3） 表示格言或警句。例如：

Pride goes before a fall. 骄者必败。

注意：此用法如果出现在宾语从句中，即使主句是过去时，从句谓语也要用一般现在时。  

4） 现在时刻的状态、能力、性格、个性。例如：

比较：Now I put the sugar in the cup. 把糖放入杯子。

I am doing my homework now. 我正在做功课。

第一句用一般现在时，用于操作演示或指导说明的示范性动作，表示言行的瞬间动作。第二句中的now是进行时的标志，表示正在进行的动作的客观状况，所以后句用一般现在时。
返回动词的时态目录

语法填空2017新题赏析(一)
主讲教师：麻雪玲 北京市英语教师
题一：全国I卷
语法填空
阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。
    There has been a recent trend in the food service industry toward lower fat content and less salt. This trend, which was started by the medical community (医学界) 61  a method of fighting heart disease, has had some unintended side 62    (effect) such as overweight and heart disease－the very thing the medical community was trying to fight.
    Fat and salt are very important parts of a diet. They are required 63 (process) the food that we eat, to recover from injury and for several other bodily functions. When fat and salt 64 (remove) from food, the food tastes as if it is missing something. As 65 result, people will eat more food to try to make up for that something missing. Even 66 (bad), the amount of fast food that people eat goes up. Fast food  67 (be) full of fat and salt; by 68 (eat) more fast food people will get more salt and fat than they need in their diet.
    Having enough fat and salt in your meal will reduce the urge to snack (吃点心) between meals and will improve the taste of your food. However, be 69 (care) not to go to extremes. Like anything, it is possible to have much of both,  70 is not good for the health.
题二：全国II卷
    In 1863 the first underground passenger railway in the world opened in London. It ran for just under seven kilometers and allowed people to avoid terrible  61  (crowd) on the roads above as they travelled to and  62  work. It took three years to complete and was built using an interesting method. This included digging up the road,  63  (lay) the track and then building a strong roof over  64  top. When all those had been done, the road surface was replaced. Steam engines  65 (use) to pull