1、While 引导的动作必须是持续性的，侧重主句动作和从句动作相对比。,Plumber （水暖工） : Im sorry I was late. Man: While we were waiting for you, I taught my wife how to swim. 水暖工：很抱歉我来晚了。 男人：我们等你的时候，我教我太太学游泳。,until, 和not.until,肯定句：主句谓语动词必须是延续性动词，主句、从句都是肯定式，意为“某动作一直延续到某时间点为止”。,Whenever I feel like exercise, I lie down until the feeling
2、passes. 每当我想锻炼时，我就躺下直到这种感觉消失。,否定句：主句谓语动词必须是非延续性动词，从句为肯定式，意为“某动作直到某时间才开始”。,Horse owner（马主）: This horse is eight-years- old and hes never raced before. Jockey（职业骑师）: How come? Horse Owner: Well, we couldnt catch him until he was seven. 马主：这匹马8岁了，他以前从来没有参加过比赛。 职业骑师：怎么会呢？ 马主：直到他7岁我们才抓住它。,Notuntil句型中的强调和倒装。,It was not until he was seven that we could catch him .（强调句型） Not until he was seven could we catch him.（not until置于句首，主句要倒装）,Concentrate on what you have, instead of wishing for what you dont have.珍惜你现在拥有的，而不是期待自己没有的。,Wherever you go, no matter what the weather. 无论去哪儿，什么天气，记得带上自己的阳光。,thanks,
