keep away和keep away from区别
keep away后面不接宾语，而keep away from后面接宾语。如：You should keep away from the bad boys. 类似的短语还有：look out和look out for。如：Look out！ A car is coming. Please look out for the cars when crossing the street. 又如：set out和set out for. We must set out earlier. We will...