seen sb to do sth,see sb doing和see sb to do

seen sb to do sth,see sb doing和see sb to do

≥＾≤ “see sb.do sth.看到某人做…”的被动形式为sb.be seen to do sth.某人被看到做…主动形式为前者是sb.be seen to do sth.这是动词不定式作主补必须加to 后者是sb.be seen doing sth.这是现在分词作主补

∪﹏∪ be ready to do sth informal to be going to do somethingimmediately 马上要；即将要；随时I shouldthinkyou're about ready tocollapseafter all thatwalking.走了那么远的路，我应该想到你要累在现代的英语，动词不定式不用作see 的宾补，所以我们不说see sb to do sth，但类似于make，被动语态中的see 用动词不定式作宾补，如be seen to do sth：He was seen to enter

6. it is a struggle for sb to do sth 难事7. used to do sth 过去常常，曾经8. Sth is really fun. adj.有趣的9. He is more than our teacher. 不仅仅，不see sb doing sth 看见某人正在做某事(正在进行中) be seen to do sth 做某事被看见53.something to eat/drink 一些吃/喝的东西(词不定式放在something等后修饰这些词) e.g: I ne

6.be strict with sb. 对某人严格要求7.carry out 实行8.be short of 缺乏9.take measures to do sth.采取措施做某事10.be known as…作为……而著名11have sb to do 使某人做某事，表示事情准备进行，have sb do sth是指让某人做某事，强调一次性的动作

see sb do sth表看见的状态see sb doing sth表看见的动作

≥△≤ see sb to do这种说法根本不常见，属于2) There is no need for sb to do sth.\ for sth.(某人没有必要做……例如：There is no need for you to bring more food. 不需你拿来更多的食物了。3) By