内容正文:
Unit 1 --2【语法精讲】
一、一般现在时的构成
主要用动词原形_______/________表示,如果主语是第三人称单数,则用动词的________。
e.g. He is an interesting actor. We all like him.
【小试牛刀】
1. Amy and Kitty are good friends.
否定句:____________________________________.
一般疑问句:________________________________?
特殊疑问句:________________________________?
2. She does his homework every night.
否定句:____________________________________.
一般疑问句:________________________________?
特殊疑问句:________________________________?
二、一般现在时的用法
1. 表示经常性或习惯性的动作或存在的状态。常与频率的副词和时间状语连用。
时间状语: ______________________________________________________.
频率副词进行排序: ______________________________________________.
★频度副词的位置
一般放在be动词__________,行为动词__________.
[译]①她有时很忙。She __________________________________________.
②我们经常去那儿。We_______________________________________.
★对频度副词提问要用______________.
[例] I sometimes write to my cousin Andy.(对划线部分提问)
__________________ do you write to your cousin Andy?
【小试牛刀】
1. I don’t think fast food is good for our health, so I __________ go to McDonald’s.
A. seldom B. always C. usually D. often
2. --Steve, _______ do you play basketball after school? --Twice a week. It can keep me healthy.
A. how far B. how soon C. how long D. how often
★2. 表示_______________________
e.g. The earth______________(be) round.
Light______________(travel) faster than sound.
★★一般现在时态解题步骤:
1 ) 确定时态
2)确定人称(注意三单形式)
3)分清be或do
★3. “主将从现”
在时间状语从句和条件状语从句中,主句是___________,从句用_____________。
常见的引导词: if_______, as soon as_______, until_________ ,when________.
e.g. If you give me a nut, I will do everything for you.
从句(一般现在时) 主句(一般将来时)
【小试牛刀】
1. Many animals ____________ (go) away when they __________ (hear) gun shots.
2. A tiger __________ (not give) up until he ___________ (find) enough to eat in winter.
3. Usually, a young boy _________ (cry) loudly as soon as he ___________ (see) a snake.
★★“主将从现”解题步骤:
1)分清主从(找引导词)
2)主将