
- Zero Conditional (general truths):
If + 一般现在时, 一般现在时. - First Conditional (future possibilities):
If + 一般现在时, will + 动词原形.
如果If 你you 加热heat 水water (它), it 沸腾boils.
If you heat water, it boils. (General truth)
如果If (天气it)it 下雨rains 我们, we 将will 留stay (在内)in.
If it rains, we will stay at home. (Possible future)
Note Use the simple present tense in the if-clause, even when referring to the future: ~~If it will rain~~ ✗ → If it rains ✓.