改错，英语
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因为die表示一个动作，die不能用完成时，如果用完成时就是表示这个人死这个动作持续了十年，很可怕！
2、she arrived in london for two days.
同上，arrive应该也是一个瞬间的动词，不可能持续两天
3、i have been to england 3 times
gone表示去了，been表示去过，因为后面有3times，所以应该用been
4、i met lucy in the street 10 minutes ago.
10 mintues ago是一个过去时的时间状语，所以用过去式不能用完成时
5、He bought me a story book last weekend
同第四题，last weekend也是一个过去时的时间状语
6、We have never been to america before
有了before、never最好用完成时，而且貌似没有be to的说法……
7、I have stayed at my aunt's house since two weeks ago
少了一个ago，since后面加一个过去的时间点
8、He has been in china for 3 days
for后面加一段时间，不能再用ago，否则表示一个时间点。
以上答案纯原创，可能有不足之处，见谅！希望帮到你~望采纳
The shopkeeper offered him the best hat in the shop with the lowest price
This city is one of the mildest and quietest places in China
Tim thinks far, and his father thinks farther, and his grandfathers thinks even more farther.
The Yellow River is the second longest river in China
This is the poorest excuse I have ever heard
Christmas is more important a celeberation than thanksgiving day
this material is lightest in weight
this flower is the most beautiful and smells nicest of all flowers in the garden
Longfellow doesn't run faster than Jim
The larger your vocabulary is the easier it is for you to understand english
The new playground is three times bigger than the old one
The task turns out to be harder than we expected
It is the perfect day for picnic
Bob is the brightest among the three boys
Lizzy is the prettiest of all her sisters
John's wife is very rude, and John is not much more polite than her.
（2）the most mild and quiet ==> mildest and quietest
（3）more father ==> fathest
（4）long ==> longest
（5）a very poor ==> the poorest
（6）the ==> a
（7）the most light ==> lightest
（8）more ==> the most，nice ==> nicest
（9）fast as ==> as fast as
（10）the large ==> the larger, the more easier ==> the easier
（11）big ==> bigger
（12）more删掉
（13）the ==> a
（14）the most bright ==> the brightest
（15）the prettiest ==> prettier
（16）more polite ==> politer
