And there's one more thing I would like to correct:

經常在劍橋騎自行車和和走路比坐公車快多了。 There are two 和 in this sentence.

Perhaps you typed one more 和 by mistake, but there should be only one 和 :)

台灣這邊, bus叫做公車, MRT叫做捷運. 捷運在某些路段是地下,某些路段是地上.

Hi Beth, If you say "經常在劍橋騎自行車和和走路比坐公車快多了" it means that when you usually ride a bike and/or walk in Cambridge, you can travel faster than taking a bus. However we understand that your actual meaning should be "Usually, people can travel faster by riding a bike or walking than taking a bus in Cambridge." In order to convey your actual meaning, you can say "在劍橋,騎自行車和走路通常比坐公車快多了."

Different positions of "經常" in Chinese sentences can produce diffenent meaning. I think the same case also applies to English sentences.

What's more, you can convey your original meaning by simply adding a comma in your sentence:

經常，在劍橋騎自行車和和走路比坐公車快多了。　<--- see the comma?
Here, "經常” is a adverb that modifies the whole sentence.
But if you say "經常在劍橋騎自行車和和走路比坐公車快多了" the "經常" modifies "在劍橋騎自行車和和走路"

I hope I have not confused you :)

Leon

Well done. Just one word needs to be corrected.

經常在劍橋騎自行車和和走路比坐公車快多了-----在劍橋和倫敦走路和騎自行車通常比坐公車要快。 （通常is more proper than 经常 here.

Practice in talking about travel in Chinese

Exercise specs:

Say you go to Cambridge train station first, then take the train to London, and the walk to work.

Say that many people in London like to take the underground to work.

Say that you like cycling

Say the underground is hot in summer and also very expensive.

Say you don't like taking the bus either.

Say that in London and Cambridge, walking and cycling are often much faster than taking the bus.

我每天先騎自行車去劍橋火車站， 再坐火車到倫敦， 然後我走路去上班。

在倫敦很多人坐地鐵去上班， 但是我喜歡騎自行車和走路。
夏天地鐵很熱也很貴。 我也不喜歡坐公車。

經常在劍橋騎自行車和和走路比坐公車快多了。（在剑桥，骑自行车和走路通常比坐公车快多了。）