【语法】时态（1）

• No right, no wrong, no rules for me, I’m free! Let it go! Let it go!
  不再被规则所束缚，世界由我！随心而行！
  《冰雪奇缘》

一般过去时 Simple Past

1. 形式： V. 过去式 (did/was/were)
2. 用法： 过去的事、过去的动作（无关现在）
   例子：
   He was a student.
   He liked music.
   She had a boyfriend.
3. 变否定或疑问：
   
4. 补充：
   

一般现在时 Simple Present

1. 形式： V. 原形 / V. 第三人称单数（do/does）
   例子：
   You like English.
   He likes English.
2. 用法：
   （1）现在经常性习惯性的动作
   We have the English class every day.
   He often gets up late.
   （2）现在的状态
   I am a teacher.
   We are in China.
   （3）永恒
   The earth is round.
   The earth moves around the sun.
   Knowledge is power.
   Practice makes perfect.
3. 变否定或疑问：
   
4. 补充：

• 与频率连用 (every, once a week, twice a month, three times a …)
  always
  usually, often, frequently
  sometimes, occasionally
  seldom, hardly
  never

一般将来时 Simple Future

1. 形式： will / am / is /are going to + V. 原形
2. 用法：将来的事（现成的将来）
   例子：
   I will make a new plan tomorrow.
   We are going to study abroad next year.
3. 变否定或疑问：
   

过去将来时 Past Future

1. 形式： would / was / were going to + V. 原形
2. 用法： 将来的事（过去的将来）
   例子：
   I said that I would become a cook in the future.
   Tony finished his work, and then he would leave for London.

过去进行时 Past Progressive

At 10 o’clock yesterday some students were taking an exam in their classrooms.

现在进行时 Present Progressive

We are taking about the water pollution.

将来进行时 Future Progressive

A great many candidates will be meeting here at this time tomorrow.