How important a thing it is to keep our promise!

　　【译文】遵守诺言是多么重要的事!

　　【句型31】...leave much to be desired. ……令人不满意

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

　　【译文】我们的交通状况令人不满意。

　　【句型32】Have a great influence on... 对……有很大的影响

　　【例句】Smoking has a great influence on our health.

　　【译文】抽烟对我们的健康有很大的影响。

　　【句型33】do good to... 对……有益;do harm to... 对……有害

　　【例1】Reading does good to our mind.

　　【译文】读书对心灵有益。

　　【例2】Overwork does harm to health.

　　【译文】工作过度对健康有害。

　　【句型34】pose a great threat to... 对……造成一大威胁

　　【例句】Pollution poses a great threat to our existence.

　　【译文】污染对我们的生存造成一大威胁。

　　【句型35】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.

　　【译文】我们应尽全力去达成我们的人生目标。