动词时态
根据新课标的要求，高中阶段需要掌握的10种时态是：
一般过去时、过去将来时、一般现在时、一般将来时、过去进行时、现在进行时、将来进行时、过去完成时、现在完成时、现在完成进行时。
一、一般过去时、过去将来时、一般现在时、一般将来时
[观察例句]
1．She told us yesterday that she would not go with us if it rained.
2．He will be twenty next month.
3．We have meals three times a day.
4．The sun rises in the east and sets in the west.
