谁能告诉我 assure make sure issure 的用法
一 assure
�� ▲assure用来表示向某人保证某事将要发生，既可以用来确证某事，也可以表示使某人确信（If you ASSURE a person of something，you promise them or tell them that）。assure的宾语通常是人或人称代词，所以不能直接搭用that － clause。其常用结构为：assuresb．ofsth．／as-。
��①He assured us of his ability to solve the problem．他向我们保证他有能力解决这个问题。
�� ②We booked early to assure ourselves of（getting）good seats．我们及早订座以保证我们能得到好座位。
�� ▲assure后还可跟抽象名词作宾语，此时与ensure同义，表示确保。
�� ①Weeks of practice assured ／ensured success in the match．几个星期的训练确保了在比赛中获得成功。
�� ②Nothing can assure permanent peace．没有什么能确保永久和平。
�� ▲assure在英国英语中作为专业术语，可表示投人寿保险。 to insure ／assure against death投保寿险（life assurance ／insurance人寿保险） 二 insure 意思是为防不测向保险公司付钱投保（to pay money to an insurance company against future disaster）。
��①My house is insured against fire．我的房子保了火险。
��②Are you insured for all risks？你是不是给自己保了综合险？
(三）make sure
(1) 查明；弄确实
(2) 确信；有把握
(3) 弄到某物
查明；弄确实
find out about something
· I think the party begins at six o’clock but I’ll phone to make sure.
我想晚会六点开始，但是我要打电话问确切了。
· Make sure of your facts before you accuse him.
在指责他以前要把材料核实一下。
确信；有把握
be convinced; feel sure
· I made sure you would come today.
我相信你今天一定会来的。
弄到某物
get possession of something;be certain of obtaining something
· There aren’t many left. You’d better make sure of one before they are all sold.
所剩不多了。在卖完以前，你最好去弄一个来。
汉翻英 翻译短文
The people of the world’s developed countries have a high standard of living. Many people are able to spend much money to buy a big house, fine cars or travel around the world. Some people buy the things they don’t need in order to compare with others.But they also have to pay for that. Many people had to work day and night for the high efficiency and good revenue. They have various appliance to help them do housework at home,such as washing machines, dishwasher.But they become fatter and fatter, their health begin to be worse. Now many people want to have a balanced attitude when they face life, and have a balanced lifestyle.
如何将gridview中DropDownList控件置为选中某一个值
首先可以在gridview中添加隐藏列，存储dropdownlist的值，然后在数据行绑定事件中判断行，找出dropdownlist，再根据将该行的隐藏列的值赋给dropdownlist。。。
