动词原形是指使用英语时动词本身的形态，即与助动词或情态动词do， does， did， shall， will， should， would， may， might， can，could，must， need， ought to等一起构成谓语的动词时，要用原形
动词原形就是一个“概念”，代表这个动词的动作本身
一般的动词都有进行时态，过去式和过去分词之分。 也是时态的性质
举例：
动词原形:take ，进行时态:taking， 过去式: took ，过去分词:taken
例句：
You eat （原形）an apple every day.
He ate （过去式）an apple every day.
Did you eat an apple every day?
She eats （三单形式）an apple every day.
Sle has eat an （过去分词）apple just now .
I want to eat an apple.
To eat is human， to digest， divine.
She is eating （现在分词）an apple.
Eating apples is good for your health.
