宇宙无敌的猫
你好!and 英[ənd , ænd] 美[ənd , ænd] conj. 和; 与; 同; 又; 而; 加; 加上; 然后; 接着; [例句]When he returned, she and Simon had already gone他回来时，她和西蒙已经走了。
winnie222626
短语：
sum up 总结；概述；计算…的'总数
in sum 总而言之；大体上
sum of money 款项
a large sum of 一大笔；大量的
sum total 总数；总计；主旨
例句：
1.The sum was paid ex gratia.
这是所付的一笔特惠款。
2.You owe a certain person a sum of money.
你欠着某人一笔钱。
3.The winners will pocket a cash sum and get a chance to release their debut CD single.
获胜者将获得一笔现金，并有机会发行他们的首张激光唱片。
4.Let x be the sum of a and b.
设x为a加b之和。
5.It must have cost a tidy sum.
这准花了相当大的一笔钱。
6.The sum of all the angles of a triangle is 180 degrees.
一个三角形的所有角度之和是180度。
7.To sum up, there are three main ways of tackling the problem...
概括起来说，这一问题主要有三种解决办法…
8.He had sought to obtain payment of a sum which he had claimed was owed to him.
他曾试图获得一笔他声称是欠他的钱。
9.Can I just sum up what we've agreed so far?
我可否就我们目前已经达成的共识作个概括？
10.What are you doing fooling with such a staggering sum of money?
你拿这么惊人的一大笔钱瞎折腾什么？
我是飞儿
“在” 在英语中有以下几种含义，所以“在”的意思和写法有以下五种： 1. 一般由介词充当，与作介词的宾语 一起 作状语。表示”在“的介词只有：at, in, during,before, after,by, behind, on表示时间状语：at 7 o'clock, at the beginning，in the morning, during the holidayby the end of last year, before yesterday表示地点状语： at home, at the school gate, by the seain hospital, in front of classroom, on the table2. "在一起"的“在”用介词with。with you, be with you, together with3. 表示”存在“的“在”： exsit in/at4. 表示“在于”的“在”： depend on5. 表示“在乎”的“在”：care about
