小于吃饭了
一个单词 certain(adj.)的(adv.)形式当然,无疑以及他的同义词确定,肯定 几个填空 只剩下大约1,600只 There are only about 1600___ It is said that the Sshara D___is spreading bit by bit
宾格砖家
We are certain that you will succeed. We are certain of your success. It's certain that you will be succeed. You are certain to succeed.
送我个时光机
Iaskedmymumtobuymeacertainbiscuit.译：我叫我妈妈给我买那个饼干（这个时候用certain的话，意思就是你让你妈妈买你指定的饼干，也不可以解释成你妈妈也知道的饼干。）就比如说，你要你妈妈去买刚刚出的糖一样，你就要那个牌子的糖，那就是certain。那么，acertain的意思就很明确了，那就是你指定的某一种。加油！！
德高防水专卖店
一定：certain.
例句：
我一定会时刻睁大眼睛提防他的行为。
I shall certainly keep a beady eye on his behaviour.
这项工作必须在一定期限内完成。
The work must be completed within a certain time limit.
我觉得我们一定是在什么地方拐错了路。
I think we must have taken a wrong turning somewhere.
一定要找个宽敞地儿坐得舒服一点。
Make sure you have plenty of room to sit comfortably.
一定要确保所有的门都锁好了再走。
See that all the doors are locked before you leave.
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