一般现在时
使用一般现在时的情况：
-
表达嗜好丶真理丶重复性的动作、不变的情况丶情感和愿望：
I smoke（嗜好）；I work in London（不变的情况）；London is a large city（真理） -
给予指令或指导：
You walk for two hundred meters, then you turn left. -
表达已排定的事情，无论是现在或未来的安排，都可用一般现在时来表达：
Your exam starts at 09.00. -
表达未来的时间，用于特定连接词之后：after, when, before, as soon as, until
He'll give it to you when you come next Saturday.
但要注意！一般现在时并不会用来表达现在正发生的事。
举例
-
嗜好
He drinks tea at breakfast.
She only eats fish.
They watch television regularly. -
重复的动作或事件
We catch the bus every morning.
It rains every afternoon in the hot season.
They drive to Monaco every summer. -
真理
Water freezes at zero degrees.
The Earth revolves around the Sun.
Her mother is Peruvian.
-
指令或指导
Open the packet and pour the contents into hot water.
You take the No.6 bus to Watney and then the No.10 to Bedford. -
排定的事情
His mother arrives tomorrow.
Our holiday starts on the 26th March -
未来的建设
She'll see you before she leaves.
We'll give it to her when she arrives.
构成一般现在时：以 to think 为例
| 肯定 | 疑问 | 否定 |
|---|---|---|
| I think | Do I think? | I do not think |
| You think | Do you think? | You do not think |
| He thinks | Does he think? | He does not think |
| She thinks | Does she think? | She does not think |
| It thinks | Does it think? | It does not think |
| We think | Do we think? | We do not think. |
| They think | Do they think? | They do not think. |
一般简单时的小笔记：第三人称单数
-
在第三人称单数时，动词一律以 s 结尾：
he wants, she needs, he gives, she thinks. -
否定句和疑问句要用 Does（= 助动词 Do 的第三人称动词变化）+ 不带 to 的不定词。
He wants ice cream. Does he want strawberry? He does not want vanilla. -
以 y 结尾的动词：第三人称动词要将 y 改为 ies：
fly --> flies, cry --> cries
例外情况：字尾 y 前面有母音：
play --> plays, pray --> prays -
当动词原型字尾是 ss、x、sh、ch 时，就在字尾加 es：
he passes, she catches, he fixes, it pushes
举例
- He goes to school every morning.
- She understands English.
- It mixes the sand and the water.
- He tries very hard.
- She enjoys playing the piano.