Poems教案.docx

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1、Poems教案人教版课程标准试验教材（英语 选修7第2单元）学问讲解其次单元1. appear (1) 意为“出现，呈现”，不及物动词，无被动态，其反义词为disappear 不及物动词，无被动态 it appears to be / that/ as if 和appear + 介词短语 a rainbow appeared in the sky after the rain. we expected him to come at seven but he didnt appear until eight. her new book will appear in the bookshops v

2、ery soon. he said i would never appear on the air. he appeared ill. he appeared (to be) willing to go with me. he appeared to have seen the film. it appeared to me that you are right. (2) 意为“ 好像，似乎，显得” 不用于进行时。you dont appear to care much for music . she appears ( to be ) an honest girl. it appears a

3、s if they have lost interest in english.appear ,look, 与seem的异同： (1) appear 指依据事物的表面现象而作出的推断，暗含事实上并非如此之意。(2) look 指凭视觉印象而作出的推断，事实上也可能如此。he looked as if he was worrying about something .(正) (3) seem 是指暗含有肯定依据的，往往接近事实的推断，强调内心的感受。his health seems to be better. 它们之后都可以接名词、形容词、to be 不定式等结构，通常可以互换，但下列状况下不行

4、互换。 look, seem 之后可接like短语，而appear 不能。 look 可用于进行时态而appear, seem 不能， look, seem 之后可接as if (though) 引导的从句，而appear 不能。 appear, seem 之后可接that 从句，而look不能。it seemed(appeared) that /as if he was ill. appear, seem 之后可接实义动词的不定式，而look不能。 appear, seem 可用于there be 结构中而look 不能。the green leaves appeared/looked/se

5、emed (to be )more beautiful after the rain. it seems /looks like years since i last met you. she is looking quite a different person now.it seems / looks as if he knew nothing about his new friend. it appears /seems that we have missed our chance. she appears/seems to have missed the third act of th

6、e play. there appears/seems to be a mistake in these figures.do let your mother know the truth .she appears _everything. a to tell b to be told c to be telling d to have been told2 certain (1) 作前置定语，意为“某个，某些” there are certain reasons why this information cant be made public.drinking is forbidden in

7、 certain countries.a certain ms jones phoned you today. i met mr.zhang at a certain place .(2) 意为“确定的，有把握的” 用法相当于sure 一般可互换。但在it is certain that 句型中只能用certain 共76页，当前第1页12345678910111213141516171819202322232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576