To my opinion,there are advantages and disadvantages traveling both by train. . 1. 按某人的意见/据某人看来 in one's opinion 是习惯用法，所以 to my opinion 要改为 in my opinion 2. both 位置不对，应该是 both advantages and disadvantages （既有利也有弊）Travel by plane is on the teip, but it is too expensive 3. 动词原形 travel 不能用作主语，应该用非谓语动词动名词或不定式，此处用动名词 travelling 较为妥当。 4. on the teip 其中的 teip 不知道把那个词写错了，如果改为 on the trip 倒是“在旅途上”，但是放在句子里说不同，是否丢了关键词，斗胆把这句话改为 Traveling by plane is convenient on the trip（旅行中乘飞机比较方便） Unless you travel by train ,it is not expensive and quite safety and you can appreciate the beautiful sceneries on both sides of the railway 5. Unless ... “如果不乘火车”和后面的“不昂贵”和“安全”意思矛盾。改为 if； 6. expensive and quite safety 是并列的表语，但是 expensive 是形容词而 safety 是名词，把后者改为形容词 safe。 7. sceneriry 是不可数名词，不能用复数。 8. 道轨有两条，改为 railways.
1. I’m seeing the manager tomorrow,who he will be back from New York. （去掉 he）Who 和 he 重复2. This is the pen with that I wrote the letter. （that改为 which）with 为介词，应用with which, 记住that 前面不加介词3.They gave up the plan,that was a very good one. （that改为 which） 记住that一般不用于逗号后，这个常考
地火燎原
