what is Simple Present and Simple past Tenses

Simple Present Tense 是指現在式。
例如： I usually get up six o'clock.
She never goes out.
Water boils at 100 degrees centigrade
She is a doctor.

Simple past Tenses 是指過去式。
例： She saw him yesterday.
I met him in 1996
I liked the movie.

Mixed Tense 是指混合式。
由於 Mixed Tense 未學過，所以不能寫出句子。

Simple present tense: 現在式

Simple past tense: 過去式

Mixed tense: 混合式