英文文化問題,點解入面既implement要加ing?

The government would face challenges implementing this policy,but i believe it would be as successful as the indoor smoke-free policy

Implementing this policy is a gerund as there is only one verb in a sentence.

The government can help with more education by having promotions （pointing） out the risks involved in drink and drug driving.

By having promotions pointing our ..... is also a gerund - same reason as the lst sentence.

Drink and Drug driving = drving here is a noun or an action not a gerund.

The government can help with more education by having promotions to point out the risks involved in the drink and drug drving.

pointing 變做to point又得唔得 yes , we can do so as sentence above

發問者: 該句子宜改為 : The government will face challenges in the implementation of this policy/in implementing this policy, but I believe that its implementation would be as successful as the indoor-free policy.

2010-09-07 20:31:48 補充：
correction : the indoor-free policy ------> the the "No Smoking Areas" policy

我推薦您一個非常不錯的英語學習網站，里面有很多非常不錯的學習資源：

http://www.hkenglishstudy.info

希望可以幫到你!

你的問題很易解釋, implement除作名詞外亦可作動詞, 在動詞後加ing就變了個 ' 動名詞'(gerund),令 implementing this policy成為個名詞,一件事情,那是對的；但我認為句子是漏寫了個介詞(preposition) to在challenges後面, 令句子在文法上變成錯句。