② He seems/ appears to have known about the secret. 他似乎已知道这个秘密。
【注意】：上面a)和b)两种句型可相互转换
② →It seems/ appears that he has known about the secret.
c) There seems/appears to be ③ There seems to be no difficulties to be discussed. 看来没有什么难题要讨论。
2）持续系动词
表示主语延续或保持一种状况或态度，后接表 状态的形容词，这类系动词主要有keep, remain, stay, rest, lie, stand, 例： ① He always kept silent at meeting. 他开会时总保持沉默。 ② Doing exercise can keep healthy. 锻炼可保持健康。 ③This matter rests a mystery. 此事仍是一个谜。
4）表象系动词
表示“看起来像”这一概念,主要是三个词： look, appear, seem, 例如： ① He looks tired.他看起来很累。
② He seems angry．他好像生气了
③ He seems (to be) very sad. 他看起来很伤心。 ④ Don’t make him appear a fool. 别把他弄得像个was wondering if we could go skiing on the weekend. — _______good. A. Sound B. Sounded C. Sounding D. Sounds
6. (2006山东) Someone who lacks staying power and perseverance is unlikely to ___ a good researcher. A. make B. turn C. get D. grow
考试重点（3点）
1. 系动词不用于被动语态, 因此常用主动表被动， 例如： ① --- Do you like the material? ---Yes, it feels very soft ② The dish smells delicious. ③ That sounds like a good idea.
2. become, turn, go , grow “变得” a) become：“变成，成为”，后接名词时，需接带有定冠 词的单数或复数名词。
b) turn：“转变成” 强调与原来不同的、新的变化，如变质、 变 色等。后名词时，接不带冠词的可数名词单数，例如：
① His dream has become a reality. 他的梦想变成了现实。
系动词
Linking verbs
从以下五个方面学习系动词：
概念 系动词的分类（6类）
考试重点(3点)
三组易混系动词的区别 高考题例讲解
系动词定义：
系动词亦称连系动词（Linking Verb）， 作为系动词，它本身有词义，但不能单 独用作谓语，后边必须跟表语，构成主 系表结构说明主语的状况、性质、特征 等情况。即：修饰的是主语。
④ Leaves turn green in spring.
⑤ She grew rich within a short time.
⑥ The search proved difficult.
3. 如何区分系动词和实意动词？ 有些系动词如keep，stay，stand也可作实意动词，如 何判断这些词作的是系动词还是实意动词。例如：
② He has turned scientist. 他成了科学家。
c) go： “变成（人的身体、精神或事物某种由好到坏的 情况）带有消极意义。 ③ In hot weather，meat goes bad d) grow： “逐渐变得……”，强调其变化过程。
④ Soon the sky grew dark. 天很快变黑了。
5）变化系动词
这些系动词表示主语变成什么样，变化系动词主要有 become, grow, turn, fall, get, go, come, run. 这类动词加上形容词或形容词性的分词后，表示事物 的发展状态。 颜色的变化用turn或go ①It is becoming much more expensive to travel abroad. 现在出国旅行的费用贵多了。
3）感官系动词
表示人体感官功能的动词feel,sound,taste, smell 等。这类动词加上形容词后，表示人或事物的特 征、性质或状态（即：就是表语概念）。例如： ①This kind of cloth feels very soft. 这种布手感很软。 ②The soup tastes delicious． 这汤味道不错。 ③This flower smells very sweet. 这朵花闻起来很香。
1. seem, appear, look B. 使用look和seem的句型： a) It looks/ seems as if…表示“看起来……；似乎……” ① It seems as if he has been at the scene of the crime. 似乎他好像在犯罪现场。 ② When a pencil is partly in a glass of water，it looks as if it were broken．如果把一枝铅笔的一部分放入 水杯中，它看上去似乎是断了。 (虚拟语气) b. sb./ sth. looks/ seems like
7. Having a trip abroad is certainly good for the old couple, but it remains _______ whether they will enjoy it. (2002全国) A. to see B. to be seen C. seeing D. see
三组易混系动词的区别
1. seem, appear, look “看起来像”
2. become, turn, go , grow “变得” 3. keep, remain, stay “保持……状态”
1. seem, appear, look “看起来像” A. 使用seem和appear的句型： a) It seems/ appears (to sb.)＋ that-clause ① It seems/ appears to me that they are right. 我觉得他们似乎是正确的。 b) sb./ sth. seems/appears ＋to do
③ The building looks like a school. 这建筑物看起来像所学校。
④ It seems like years since I last saw you. 自从我上次见到你好像有几年了。
1. seem, appear, look “看起来像” C. 三者含义上的区别 Seem: 常含有基本接近事实的意义； Appear: 多指从外表判断，一般与事实不符； Look: 则着重指从外表而得到的印象，所得出的 判断有可能与事实相符，也有可能与事实不符。
⑥ Please stay seated.请继续坐着。
针对性练习题（高考题）
1. (2007江苏) My parents have always made me ______ about myself, even when I was twelve. A. feeling well B. feeling good C. feel well D. feel good
2. 连系动词后面做表语的成分中，其中一成分是形容 词或分词作表语修饰主语，而不是副词。例如: ① Put the fish in the fridge, or it will go bad in hot weather. ② The book lay open on the desk.
③ She seems right.
②You can grow wise by practice．实践会让你变聪明。
③The old man is going blind．那位老人快要失明了。
6）终止系动词
表示主语已终止动作，主要有prove, turn out, 表达证实，变成之意, 例如： ① The rumor proved false. 这谣言证实有假。 ② The search proved difficult. 搜查证实很难。
1) keep
① After the accident, he still keep alive. 这次事故后，他仍然活着。 ② Please keep these things for me while I’m away. 在我离开期间，请你替我保管这些东西
2) taste ① The newly-invented soft drinking tastes quite unique. 这种新研制的软饮料尝起来挺独特的。 ② The chef is tasting the fish carefully. 厨师长正在品尝这道鱼。 3) remain ① He remained silent. 他保持沉默。 ② I remain in London until May.我在伦敦一直待到五月。 区分方法： ① 看这些动词后的成分是不是修饰的是主语，如果是， 能够构成系表结构，此时这些词为系动词； ②若这些动词为实意动词，a）若为及物动词，后都带 有宾语，b) 若为不及物动词，则后面不带任何成分。
b) Remain:系动词“仍然存在……状态”，后接adj.、过去分 词、名词或介词短语，强调某种状态前后无变化。
② The door remained closed.门仍然关着。