太原个人二手车:英语问题！请英语高手解答！万分感谢！！

Yesterday,i went to the fitness centre and did some exercise.

I would have been to many countreis by the age of 60.(我不太明白你的本意)

she would have received the letter,if you had put a stamp on it.(本意逻辑上有问题)

China is a cuntry which locates in Asia and its figure looks like a chicken on the map.

Do you know this is my sweeter?

1. Yesterday, I went to the fitness centre and did some exercise. 原句只是时态错误。
2. By the time I am 60, I will have been to many countries. 原句主要是时态错误，一个拼写错误。
3. She would have received the letter if you had put a stamp on it. 原句是时态错误。
4. China is a country that looks like a chicken/cock in the map and it is in Asia. 原句包括拼写错误和数的错误。
5. Do you know this is my sweater? 原句为句子顺序问题和拼写错误。

1.Yesterday,I went to the fitness centre to do some exercise.
2.By the time i am 60,i will have been to many countries.
3.She would have received the letter,if you put a stamp on it.
4.China is a country that looks like a chicken on the map and it is in Asia.
5.Do you know this is my sweater?

1 Yesterday,i go to the fitness centre and do some exercise.
最普通的时态错误，go改went，do改did

2 By the time i am 60，I will be to many countreis.
这个是虚拟语气，表示对将来的虚拟，will be改为would have been，am改不改were我还不确定

3 she would have receive the letter,if you have put a stamp on it.
也是虚拟语气，对过去的虚拟，把 you have改为you had

4 China is a cuntry that look like a kitchen in the map and it is at Asia.
这个从句首先要把look改为looks,介词应该不用at而用in吧

5 This is my sweter do you know?
这个错得就莫名其妙了，最好就是在中间加个逗号
This is my sweter，do you know?
如果不这么改，就把do you know放句首，变为一般疑问句：Do you know this is my sweter？

差不多吧

1 Yesterday,i went to the fitness centre and did some exercise.
时态应为过去式

2 By the time i am 60,I will have been to many countreis.
将来完成时
3 she would have had received the letter,if you have put a stamp on it.
虚拟语气

4 China is a cuntry that looks like a chicken in the map and it is at Asia.
晕，这个看了半天才想出它想要表达什么意思，这个太晕人了。
5 This is my sweater do you know?
又是拼写错误，不过我觉得最好还是This is my sweater,don't you know?

1,go=went, do=did
2,be=have been ,contreis=contries
3,receive=received
4,cuntry=country;look=looks;kitchen=chicken
5,sweter=sweater