花费某人多长时间做某事英语如下：
It takes somebody sometime to do something。
例句：
1、完成这个计划花了我三个月的时间。
It takes me three months to finish this project.
2、在我看来，我认为这是浪费时间。
Personally I think it's a waste of time.
3、我们必须给他时间让他冷静下来。
We've got to give him some time to cool off.
4、他们要在规定的时间和地点会晤。
They were to meet at a given time and place.
5、我离开日本的时间一天天临近了。
The time for my departure from Japan was drawing nearer every day.
6、我没什么钱，也很少有空闲时间。
I had little money and little free time.
7、她的时间总是先花在孩子们身上。
The children always have first call on her time.
8、教师和每个孩子沟通的时间有限。
Teachers have a limited amount of time to interact with each child.
9、你大部分时间甚至没听我说的话。
Half the time you don't even listen to what I say.
10、他难以从工作中抽出时间去休假。
He could not get time off work to go on holiday.
如何学习英语：
培养学习英语的兴趣
兴趣是最好的老师，培养学习英语的兴趣很重要。我们可以通过看美剧、电影、英文原著等方式来培养自己的学习兴趣。爱上英语后，学习英语就容易多了。
时不时背英语单词
单词要经常背，时刻复习，这样记忆才深刻。最好随身携带一个单词小册子，这样就可以利用零碎的时间背诵，效率很高。
不能死记硬背英语单词，要把单词放在句子中或文章中记忆，这样记起来比较容易，而且不容易忘记。