review：
1，总而言之，成功是艰苦努力的结果。
to sum up, success results from hard work.
2，每天晚上总结一下自己一天所做的事。
sum up at night what you have done by day.
take great pains"煞费心思"
for instance:
1,parents take great pains over their children's education.
父母对孩子的教育煞费心思。
2,each of us should take great pains to command the english language.
我们每个人都应该尽力把英语这门语言掌握住。
1.It will take great pains to change this factory's economic position.
2.Parents always take great pains to tell children how to think questions and teach them the way to find answers when facing unfamiliar field.
