托福appear, 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，这两者可能是真象也可能是假象，appear的不确定性更大一些，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
托福注意不要与动词cross弄混：(1) 表示“穿过”时的用法比较：It's dangerous for an old man to cross such a crowded street. 老人穿过这样拥挤的街道很危险。It's dangerous for an old man to walk across such a crowded street. 老人穿过这样拥挤的街道很危险。(2) 表示“交叉”时的用法比较：The roads cross just outside the village. 那两条路就在村外交叉。He sat there with his arms across his chest. 他坐在那儿，两臂交叉放在胸前。（介词用法）托福</p 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
