“如果你生病了”用英语怎么说?切记勿用机器翻译 如果你生病了，你就要去医院看医生。

If you were sick

if you are ill

If you're sick

If you get ill

如果是说过去或者现在的话
用虚拟语气
if you were sick
如果是未来的就是
if you are sick

If you're sick/ill,

If you're sick/if you are weak / if you get ill