how important a thing it is to keep our promise!

　　遵守诺言是多么重要的事!

　　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。