Part3: which transport would you like to choose, the bike, the bus or the car?
However, when I have to travel a long distance, I’d like to take a bus which can offer us a cheap way of making our way anyway around town; but I’m not saying the car is not cool. I mean the car has its own edge which is making our life more comfortable for its safety and speed features.
分析：which引导的定语从句分别位于bus/ traffic jam后，对名词进行补充说明，which分别指代名词bus和traffic jam，在增加语法多样性的同时，让句子的含金量up up up !
Part 1 how often do you usually go to the park?
Well, generally speaking, I go there almost every other day. I love jogging in the park, which makes me feel refreshed and full of energy...
Part 2 Describe an intelligent person you know
... Now, as to what kind of person he is, well, I think it’s fair to describe him as an egghead, which means that he’s really knowledgeable and sharp, sharp as a tack, actually.
分析：which指代主句中的名词egghead, 补充说明其含义;同学们在口语练习中，如果说到了某个复杂概念或者抽象名词，可在后面使用which means that... 对其进行补充说明。