《必修三UNIT4单词讲解.ppt

Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 1. unlike prep. 与……不同；不像； eg.Unlike her younger brother, she is very diligent. 和她弟弟不同的是，她很刻苦。 拓展： (1)unlikely adj. 不大可能的；未必会发生的； Its unlikely that…… ……的可能性不大 (2)likely adj. 可能的 adv.很可能 Its likely that…… 可能… (3) sb./sth. be likely to do sth. ……有可能做某事 eg.这位影星可能来 The movie star ___ ____ _____ _____. is likely to come Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 2 . harmful adj. 有害的;造成伤害的； Many people are aware of the harmful effects of smoking. 很多人都意识到了吸烟的危害。 【联想拓展】 （1）be harmful to 对……有害 （2） harm n.v. 损害，伤害 do harm to sb.= do sb.harm = harm sb. 对某人有害； （3）There is no harm in doing sth. 做某事没有害处 eg. 在学习上取得进步没有任何害处。 There is no harm in making progress on study. (4) 无害的；不致伤的； harmless 【即学即练】 ①吸烟有害健康。 Smoking ______ ______ ______ your health. is harmful to does harm to Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 3.exist vi. 存在；生存 (无被动,无进行) Man cannot exist without air. （1） exist on …… 靠……生活、生存 eg.他们靠微薄的收入生存是不可能的。 Its impossible for them to exist on a small income. (2) there exists/esisted…… 某地有…… eg. 在我们公司门口有两个巨大的石狮子。 There exists 2 huge stone lions at our company gate. 拓展： （3） existence n. 存在；生活; come into existence 产生；成立；开始存在； eg.Do you know when the English wordtuhao_______ ___ ______ come into existence Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 4.puzzle vt. vi. (使)迷惑；(使)为难 n.谜；难题 Her reply puzzled me. 她的回答把我弄糊涂了。 (2) puzzle about/over …. 对…感到迷惑；苦苦思索； 她几个星期也琢磨不透他那封奇怪的来信。 She’s been ______ ______ his strange letter for weeks. eg.Their reason for doing it is still a puzzle to me. 他们为什么要做此事我仍莫名其妙。 (3) be?a?puz