If you see someone falling into the water

落水───Fall into the water;看到───notice

He was saved from a fall into the water.───他掉入水中，后被救起。

If you keep filling a ship with stuff, something will eventually go overboard and fall into the water.───如果你不断向船填装材料，最终会超过极限，导致物体落入水中。

You may fall into the water and drown.───你可能会落到水里并溺水。

They are very friendly to people. If you fall into the water and can't swim, they may come up to help you.───它们对人很友好，如果你掉进水里又不会游泳的话，它们会过来救你的。

but when it came to Toad's turn, of course he managed to slip and fall into the water with a loud splash and a squeal of alarm.───轮到蟾蜍时，他偏要滑倒。扑通一声跌进水里，还惊恐地尖叫一声。

the husband went on with his own reason: why not suppose something els ? why suppose that my mom fall into the water instead of your mom?───老公强词夺理：“你假设什么不好，干吗假设我妈妈掉水里，你怎么不假设你妈？”

Don't play at the waterside. You might fall into the water!