[求助]AT新手...初步學習出現盲點請大家幫我診斷...!

andy7788

大家早上好~

我开始接触AT大概一个礼拜,在这一个礼拜我开始做一些补习班老师给的题目,我遇到些状况时感到无助…不知我是缺乏哪类型的能力…是否是文法读的不够熟…或是请大家教教我该怎样加强或补救…

举例说明:

ex1.

这是我练习做补习班的Math类型的题目

Grace spent 3 hours cleaning the garage and finished half of the work.

Tina joined her and together they finished the work in 1 hour.

How long would it have taken Tina to do the cleaning alone?

<我错误的观点>

Grace spent 3 hours cleaning the garage and finished half of the work.

我一看直觉就是Grace花了三个小时清理车库并完成了工作的一半…

所以我怎么解都解不出答案…

后来请教了一位在德国读书的同学…

他说:所谓的work就是指clean the garage…

但是他给我的理由是…不这样解算不出答案…

我是比较死脑筋…我想请教是不是我在阅读的时候犯了怎么的毛病该怎样补救..

ex2.

同样也是练习Math类型发现的问题

Train X accelerates on a straight track.

Its speed increases by 10 miles per hour in each successive 10-minute interval since the train left the station.

The train started with an average of 50 mile per hour , how many miles did the train travel in the second 10-minute interval ?

<我错误的观点>

我认为起速是50mile所以first interval的时候时速已经到60mile接着我认为second interval那时候时速是70 mile

可是正确的答案在second interval 的时候是60 mile