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 relaxed.听音乐使我们能够感觉轻松。
