三十一、Leave much to be desired (令人不满意)

　　例句：The condition of our traffic leaves much to be desired.

　　我们的交通状况令人不满意。

　　三十二、Have a great influence on ~~~ (对...有很大的影响)

　　例句：Smoking has a great influence on our health.

　　抽烟对我们的健康有很大的影响。

　　三十三、do good to (对...有益)，do harm to (对...有害)

　　例句：Reading does good to our mind.读书对心灵有益。

　　Overwork does harm to health.工作过度对健康有害。

　　三十四、Pose a great threat to ~~ (对...造成一大威胁)

　　例句：Pollution poses a great threat to our existence.

　　污染对我们的生存造成一大威胁。

　　三十五、do one's utmost to + V = do one's best (尽全力去...)

　　例句：We should do our utmost to achieve our goal in life.

　　我们应尽全力去达成我们的人生目标。