托福not until/until两者皆可接延续性动词和暂短性动词.一、not...until指的是“直到...才”的意思，如 I did not go home until my mother called me.我直到我妈妈打电话给我才回家.not until的倒装与强调结构1.当Not until位于句首时，句子要倒装.其结构为:Not until+从句/表时间的词+助动词+(主句)主语+谓语+.如:①Not until the teacher came in did the students stop talking.直到老师进来学生们才停止讲话.②Not until next week will the sports meet be held.直到下周才开运动会.2. not until的强调结构为:It is / was not until+从句/表时间的词+that+.上面两句改为强调句为:③It was not until the teacher came in that the students stopped talking.④It is not until next week that the sports meet will be held.直到我结婚的时候，我才有钱买了自己的房子.It was not until I got married that I could afford to buy a house of my own.而until指“直到”.例如：Go alone the street until you see the traffic light.往前走，直到你看见交通灯.托福
托福appear，托福辅导， look， seem的用法特点一、基本区别look 指视觉印象，appear 指外表给人的印象，新托福考试，这两者可能是真象也可能是假象，托福，appear的不确定性更大一些，托福暑假班，seem 侧重指根据某种迹象作出的推断，也不一定是事实。二、后接不定式的问题三者均可后接不定式，但 look 之后一般只限于 to be(且较少见)：He seems [appears， looks] to be very tired. 他好像很累了。He seems [appears] to have traveled a lot. 他似乎去过不少地方。This seems to be a happy solution. 这似乎是一个理想的解决办法。但是不说He looks to have traveled a lot.三、后接like的问题look， seem 之后可接介词 like，但 appear 之后一般不能：He just looks like his brother. 他的模样就像他的哥哥。He seems like a fool. 他看起来像个傻瓜。四、用于进行时态的问题appear 和seem不用于进行时态，但look有时可这样用(尽管较少见)：He looks [is looking] well. 他看上去气色不错。但是不说He is seeming [appearing] well.五、用于it开头的句子三者均可用于 it 开头的句子，且三者之后均可接以 as if 或 as though 引导的从句，另外 appear 和 seem 之后还可接 that 引导的从句：It looks [seems， appears] as if he has lost interest in his job. 看来他对自己的工作已失去了兴趣。It seems [appears] that he is very tired. 他似乎很累了。为避免重复，appear和seem后接的 that 从句有时可用so， not 代之：“Is he reliable? ” “It seems [appears] so (not).”“他可靠吗?”“似乎是可靠的(不可靠)。”托福 新托福考试_托福_澳博培训(查看)由西安市雁塔区澳博外国语培训中心提供。西安市雁塔区澳博外国语培训中心（xian.gedu.org）坚持“以人为本”的企业理念，拥有一支的员工队伍，力求提供好的产品和服务回馈社会，并欢迎广大新老客户光临惠顾，真诚合作、共创美好未来。澳博培训——您可信赖的朋友，公司地址：西安市科技路１号，联系人：童先生。同时本公司（www.xianyasi.com）还是从事西安雅思，西安雅思培训，西安雅思辅导的服务商，欢迎来电咨询。 产品：澳博培训供货总量：不限产品价格：议定包装规格：不限物流说明：货运及物流交货说明：按订单
