爱华网
1、however adv.可是，然而 pron.无论如何……也，不管怎样……也
It was raining hard, however, I think we should go out. 雨下得很大，不过我想我们还是应该出去。
He said it was so; he was mistaken, however. 他说就是这样，可是他错了。
We'll have to finish it, however/no matter how long it takes. 不管要花多长时间，我们都必须把它做完。
2、over prep.&adv. 在……期间，直到……过完；一边……，一边……；正在进行……的过程，正在从事……的时候；超过；结束，完结
Let's talk about it over a cup of tea. 我们一边喝茶，一边谈论。
Can you stay over Christmas? 你能过完圣诞节再走吗？
My grandma is over seventy. 我奶奶70多岁了。
By the time we arrived, the meeting was over. 我们到达时，会议已结束了。
3、base v.建于……之上，以……为根据 n. 底，根基，基础，基地，根据地
One should always base his opinion on facts. 一个人应该始终以事实为依据来表明自己的观点。
We camped at the base of the mountain. 我们在山脚下安营。
4、communicate vt.传达，传递（意见、消息、感情等），交流，传播 vi.通信；取得联系
communicate sth. to sb.将某事通知某人
communicate with sb. 与某人联系
communication n.传达，交流情况；通信
be in communication with sb. 与某人交流
Do you often communicate with your friends? 你经常和你的朋友通信吗？
5、present adj.现在的；出席的；到场的 n.礼物 vt.赠送；介绍；呈递
present at the meeting 出席会议
be present to 出现在……
be present to mind 放在心上；记忆犹新
at present 目前；现在
make a present of sth. to sb. 把某物赠送给某人
make sb. a present of把某物赠送给某人
present sth. to sb. 把某物赠送给某人
present sb. with sth. 把某物赠送给某人
He doesn't know how to deal with the present situation.
他不知道怎样应对当前的局势。
The people present at the meeting are advanced workers.
出席会议的人都是先进工作者。
