1. It is important for everyone to learn English well in our rapidly developing world.
在这个迅速发展的世界里，对每个人来说，学好英语是非常重要的。
同样句型包括：It is important/（necessary, difficult, convenient, possible）for sb. to do sth.
2. The harder you work at it, the more progress you will make. 你工作越努力，你取得的进步就越大。
(1)The+比较级..., the+比较级...
(2)比较级+and+比较级（The world is getting smaller and smaller.）
3. If everyone makes a contribution to protecting the environment, the world will become much more beautiful.
如果每个人都为保护环境做出贡献，世界会变得更加美好。
类似的句型还有：If necessary…, they can…
