下面是小编为大家整理的down是单词吗，本文共6篇，如果喜欢可以分享给身边的朋友喔!本文原稿由网友“lixiangheaven”提供。
篇1：down是单词吗
The system was down all morning.
系统整个上午都无法运行。
The name has come down from the last century.
这名称是从上个世纪流传下来的。
Keep down! You mustn't let anyone see you.
蹲下！一定不要让人看见你。
The computer system will be shut down over the weekend.
计算机系统周末关闭。
You must slow down or you'll make yourself ill.
你得松松劲，不然会累病的。
Let's get down to business.
咱们开始干正事吧。
篇2：down和jump是什么意思
2、可以加的介词不同
jump down后面如果加个from的话用法就和jump off一样了，后面接主语发出动作的地点。
也就是说跳下悬崖既可以说jump off the cliff，又可以说jump down from the cliff。
jump的'用法
1、释义
n. 跳跃；跳动；上涨
v. 跳越；暴涨
2、例句
1、用作不及物动词S+～(+A)
She jumped when she heard the news.
她听到那消息时,跳了起来。
2、用作及物动词S+～+ n./pron.
The stream was so broad that nobody could jump it.
小溪太宽了,没人能跳得过去。
3、用作名词 (n.)
The jump was a very difficult one.
这种跳跃是个非常难的动作。
篇3：was going down是什么时态
双语例句：
1、Was going to college a good preparation for your career?
上大学是否为你的'事业打下了良好基础？
2、It soon became apparent that no one was going to come.
很快就很清楚，没人会来。
3、I overheard him say he was going to France.
我偶然听见他说他要去法国。
4、He had got himself into a hole and it was going to be difficult to get out of it.
他使自己陷入了困境，难以摆脱。
5、It was going to take some deft political footwork to save the situation.
当时得采取一些巧妙的政治手段以挽回局势。
篇4：常用单词的前缀是a的
She looked after her ailing father.
她照顾有病的父亲。
What is ailing you?
你哪里不舒服？
The rise in overseas sales is good news for the ailing American economy.
海外销售额的`上升对于不景气的美国经济来说是个好消息。
His country desperately needs Western aid to restore its ailing economy.
他的国家急需西方援助以复苏其不景气的经济。
He is said to be ailing at his home in Washington.
据说他身体欠佳，正呆在华盛顿的家中。
篇5：information单词是可数名词吗
This information is only raw data and will need further analysis.
这些资料只是原始数据，还需要进一步进行分析。
New information is matched against existing data in the computer.
新的`资料和电脑中已有的数据作了比较。
Can you give me some information about the school?
你能给我讲讲这所学校的情况吗？
Your local library will be a useful source of information.
你们当地的图书馆就是很好的资料来源。
Further information is available on application to the principal.
申请书请交校长，届时将提供详情。
篇6：have been down是什么时态
另外，需注意：
1.现在完成时不能单独与准确时间状语连用，（如表示过去的时间状语）
如yesterday(morning、afternoon),last(morning、afternoon）等，除非与for,since连用.
2.现在完成时往往同表示不确定的.过去时间状语连用。如already（肯定句中），yet（否定，疑问，句末），just,before,recently,still,lately,ever等。
3.现在完成时态经常与表示频率的时间状语连用，如often,sometimes,ever,never,twice,on several occasion等。
现在完成时表示一个过去发生的动作在过去已经完成，并且这个动作对现在仍有影响或结果，同时说话者强调的或感兴趣的就是这个影响或结果。
