Most Commonly Used English in Chinese -- 快点儿

English: Hurry up!
Chinese: 快点儿！（kuài diǎn'r）

Example: Angela has a six-year-old daughter Elaine who always dawdles. This morning the school bus is coming but Elaine hasn't finished her breakfast yet. So Angela says:

"快点儿！你要迟到了！" （Kuài diǎn'r! Nǐ yào chí dào le!)/ Hurry up! You'll be late!）