1：如果我们及时采取行动,我们就能救他们
If we take actions in time,we'll save them.
If we had taken actions in time,we would have saved them.
2：加入我父母帮助我,我就不会担心这件事
If my parents helped me,I would not worry about it.
3:假如我们在家里,我们就会看见她了
If we were at home,we would see her.
4：加入钱够的话,我就去北京旅游
If the money were enough,I would have a trip in Beijing.
5：如果人人都爱护野生动物,我们会共享这个世界
If everyone/all protected wild animals,we would share the world.