套路： 来源：考试大 when we．．．／you，we．．．／you will be faced with the choice between a and b．before making the right choice，we／you had better make a close comparison and contrast of them． first of all，a．．．also，b．．．second，a．．．likewise ，b．．．despite their similarities， a and b are also different in the following aspects．first，a．．．however，b．．．besides，a．．．on the contrary，b．．． therefore，it depends which．．．we／you should choose，if we／you．．．，we／you should choose a；but if we／you．．．，we／you should turn to b． 来源：考试大 【范文】 1 来源：考试大 traveling by train or by plane
when we go on a business trip，we will be faced with the choice between traveling by train or by plane．before making the right choice，we had better make a close comparison and contrast of them． 来源：考试大 first of all，a train will take us to our target railway station．also，a plane will take us to the target airport．second，in a train we can enjoy the beautiful scenery of the countryside．likewise，in a plane we can command a good view of fields，buildings，mountains and even clouds below．despite their similarities， traveling by train or by plane are also different in the following aspects．first，a train ticket is less expensive．most of us can afford it．however，a plane ticket is about twice as expensive as a train ticket．most of us grudge paying for it．besides， it is safer to travel by train．if the train gets into trouble，we may survive by jumping out of it．on the contrary，if we travel by plane，we have to ask god to bless us．finally，it takes us longer time to travel by train than by plane． therefore，it depends which transportation tool we should choose．if we just want to save money，we will travel by train；but if we want to save time，we should turn to the plane． 来源：考试大 【范文】 2
some people prefer to study at home using such technology as computers. others prefer to study at traditional schools. 来源：考试大 when we talk of studying，we will be faced with the choice between studying at home or study at traditional schools. before making the right choice，we had better make a close comparison and contrast of them． 来源：考试大 first of all，studying at home can save a lot of time if your classroom is right in your own home. second，studying at home using such technology as computers can make us learn more from the internet and educational courses on tv than you can at school. likewise，studying at classroom can provide us with knowledge form teachers. despite their similarities, studying at home or at classroom are also different in the following aspects．first，studying at home can save us a lot of time. however, studying at classroom takes a lot of time on the way to school. besides，the advances made in the electronic media have made the traditional classroom out-of-date. on the contrary，studying alone at home is boring for many people．finally，there can be no substitute for a good teacher, who must not only be able to impart facts and theories, but also to appraise and encourage his students.
therefore，it depends where we should choose to study．if we just want to save a lot of time and money, we will study at home；but if we concentrate on what we learn，we should turn to classroom.