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對比,以三個為宜。如果句子足夠多,兩個也可以。寫作一般不少于5句話。不多于10句話。不要通篇都是Before,...Now,... Before,...Now,... Before,...Now,... 寫作并不是造句子。表示過去,可以用before, then, at that time, 3 years ago時間可以放句首,也可以放句末。放句首,需要加逗號,放句末則不需要。六、范文(一)Changes in meHello, everyone. I39。m Amy. I39。m different now.3 years ago, I was short and thin. I couldn39。t ride a bike. Now, I39。m taller and stronger than before. So I can cycling. I like it very much.What a big change!Then and NowEverything is changing. Me too!Before, I had short hair. But now, I have long hair. Once I wasn39。t an active girl. I didn39。t talk a lot. Now, I talk more than before. I always talk with joy.Changes are with me.Before and NowHi, myname is Mike. Changes are with me.3 years ago, I didn39。t wear glasses. I was quiet in class. At that time, I didn39。t like music. I thought it was too hard(難).But now, I wear glasses. And I39。m very active in class. I like music very much, because I can play the piano.I39。m different now. What about you?