Ⅱ. Read and think（你了解水循环吗？请读一读，写一写）
1. The sun heats the , turning it into .
2. Water vapour in the sky forms .
3. When a cloud holds enough water droplets or ice crystals, it makes or .
4. Rain goes into , then back to the .

1. water, water vapour 2. clouds 3. rain, snow 4. lakes/rivers, sea

Ⅲ. Read and act（Xiaotian 和 Mr Qian 在讨论冰、雨和水蒸气是什么形成的。请你和好朋友分角色完成下面的对话）

Where is ice from? It’s from water vapour and water.
Where is rain from? It’s from water vapour in the clouds.
Where is water vapour from? It’s from water and ice.（注意：此处涉及水的升华方面的知识,小朋友可网上查阅相关知识。）