Han: It takes about 20 minutes to get to the office but sometimes it takes an hour because of traffic jam.
Correction: It takes about 20 minutes to get to the office but sometimes, it takes an hour because of traffic jam.
Explanation: Punctuation marks such as comma, periods and question marks are very important in a sentence. They may indicate a pause, or an emotion that is necessary for the reader. It also makes the message of the writer clearer to understand.

Han: However, here in China, I'm trying not to drive a car by myself as possible as I can, because driving a car drives me mad.
Correct: However, here in China, I'm trying not to drive a car as possible as I can, because it drives me mad.
Explanation: You can omit the phrase 'by myself', because it is already implied. And try to use pronouns like IT, so as not to use the subject again.

Han: It may be a matter of possibilities, but it seems that every drivers and every pedestrian in this city ignores traffic rules, sometimes they risk their own life on the road.
Correction: It may be a matter of possibilities, but it seems that every driver and every pedestrian in this city ignores traffic rules and sometimes, they risk their own life on the road.
Explanation: 'Every' is a determiner. It isEvery is a determiner. It is normally used before a singular noun.

Han: Besides people who do not follow traffic rules, traffic jam is a big problem.
Correction: Besides, people who do not follow traffic rules make the traffic jam a big problem.
Explanation: Punctuation marks such as comma, periods and question marks are very important in a sentence. They may indicate a pause, or an emotion that is necessary for the reader. It also makes the message of the writer clearer to understand.

Han:In my view, the number of cars is already well beyond of the level this city can control.
Correction: In my view, the number of cars is already way beyond the level this city can control.
Explanation: Use different kinds of vocabulary words in your sentences. We are free to use verbs, nouns, articles, pronouns in our sentences so that we can convey our message clearer to the reader. Study how to use these and the proper arrangement, too.

Han: As a result, the roads are so congested at anytime.
Correction: As a result, the roads are so congested at any time.
Explanation: Some people use 'ANYTIME' and 'ANY TIME' interchangeably. But make sure to add the preposition 'AT' when using the two-word phrase 'ANY TIME'.

Han: As I hate to be stuck in a traffic jam, I don't want drive a car here except in early morning or late in the evening when flow of traffic is relatively good.
Correct: As I hate to be stuck in a traffic jam, I don't want to drive a car here except in the early morning or late in the evening when flow of traffic is relatively good.
Explanation: Prepositions, articles and conjunctions are an important part of any language. They bring together the bulk of the language; that includes nouns, verbs, and adjectives. Learning them will take a serious obstacle out of the way in any language.

Good job, Han! Fewer corrections this time. :)
~Teacher Shiela