1) 主语+ cannot emphasize the importance of too much.(再怎么强调的重要性也不为过。)例如:We cannot emphasize the importance of protecting our eyes too much.我们再怎么强调保护眼睛的重要性都不为过。2)There is no need for sb to do sth. for sth.(某人没有必要做)例如:There is no need for you to bring more food.不需你拿来更多的食物了。3)By +doing,主语+can . (借着,能够)例如:By taking exercise, we can always stay healthy.借着做运动,我们能够始终保持健康。4) enable + sb.+ to + do. (使能够)例如:Listening to music enables us to feel relax