1) 警察现在正在搜索一位报称在上周五洪水袭击时失踪的女子。have got lost是迷路的意思,而missing——失踪,更贴近题目的意思2)take up:vi. 拿起(开始,从事,吸取,接纳)占据……空间/时间例句与用法:1. I must take you up on that point. 我一定要就那个问题和你辩论。2. She took up the narrative where John had left off. 她接著讲约翰未讲完的故事。3. She's taken up with an unemployed actor. 她跟一个失业的男演员混得很熟了。4. I'd like to take you up on what you said about unemployment. 对於你谈过的失业情况,我想向你提出问题。save up: v. 储蓄, 贮存例句与用法:1. He says that he is saving up to bay a house for, his family. 他说他正在储蓄,准备买座房子给家人住。2. I thought perhaps I could find work and save up the fare. 我想我或许能找到工作攒足这笔车费。3. I was looking for a temporary job so that I would save up some money to go travelling. 我在找一个临时工作,以便节省一些钱供旅游用。4. Jane save up pieces of cloth to make a quilt. 简存了几段布留做棉被用。keep up: 保持,继续,维持,跟上(时代)例句与用法:1. The enemy kept up their bombardment day and night. 敌军一直日夜不停地狂轰滥炸。2. The high cost of raw materials is keeping prices up. 原料费用昂贵使得产品价格居高不下。3. The house is becoming too expensive for them to keep up. 他们的房子维修费用贵得越来越修不起了。draw up: vt. 拟定(起草,拉起,画出)例句与用法:1. We'll notify her to draw up a contract. 我们将通知她起草一份合同。2. A committee was appointed to draw up a new constitution. 指定了一个委员会来起草新章程。3. Suck on the tube to draw up the water. 用管子把水吸上来.4. Draw up a will. 写下遗嘱3)对的,但是同时也有exchange...with的搭配,exchange for:以…交换Tomorrow I'll exchange for a larger shirt.明天我要换大号的衬衫。exchange with:和…互换Anne wouldn't exchange with him for anything.无论他拿什么东西安妮都不愿和他交换。4)a great deal of 后接不可数名词 a great number of后接可数名词两者都是修饰复数的,但是复数名词分为可数和不可数两种