it的用法在作文中的应用ppt课件.ppt
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1、让it的用法 融入写作,Teaching aims: 1. it作代词时的用法; 2. it作形式主语和形式宾语; 3. 强调句型; 4. it 固定短语和常用句型; 5. it的用法在写作中的应用。,热身一下1. 今天天气寒冷。2. 今天是星期三。3. 教室到操场有3分钟的步行路程。4.我有一本字典,它使我聪明。5 我没有字典,你能借我一本吗?,It is cold today.,Its Wednesday today.,It is a three minutes walk from classroom to the playground.,I have a dictionary. It m
2、akes me smart.,I have a dictionary, which makes me smart.,I have no dictionaries. Can you lend me one?,想一想,it 作代词分别指代什么?,1. it的基本用法(1)用作人称代词,代替前文提到过的事物。The train has arrived. It arrived half an hour ago.(2)用以代替提示代词this, that。Whats this? Its a knife.Whose watch is that? Its mine.(3)起指示代词的作用,指一个人或事物。W
3、ho is knocking at the door? Its me.(4)指环境情况等。It was very noisy (quiet) at the very moment.(5)指时间、季节等。What time is it? Its eight oclock.(6)指距离。It is a long way to the school.,2. it 作形式主语,To learn English well is important for us. Playing computer games all day long is a waste of time.That we students
4、 should be kind to others is necessary.,It is important for us to learn English well.,3. It is necessary that we students should be kind to others.,2. It is a waste of time playing computer games all day long.,To learn English well,Playing computer games all day long,That we students should be kind
5、to others,It is no use /no good /a waste of time doing sth.,It is strange/ important/necessary that(should) do,翻译: 据说他读过这篇小说,Itwassaidthathehadreadthisnovel .,= sb/sth is/was said to do/ have done,1. It + be + 形容词+主语从句,如: It is uncertain whether he can come to Jennys birthday party or not. 2. It + b
6、e + 名词词组 + 主语从句,这类名词有:a fact, a pity, a shame, an honour,a question等,如: Its a pity that you missed the exciting football match. It remains a question whether he will come or not. 3. It + be + 过去分词 + 主语从句,这类过去分词有:announced, believed, expected, hoped, decided, reported, said, shown等, 如: It is reported
7、 that 16 people were killed in the earthquake. It is not decided who will give the operation to the patient. 4. It + 不及物动词(seem, appear, happen等) + 主语从句, 这类不及物动词有:appear, happen, seem等, 如: It seemed that he didnt tell the truth. It happened that I was out when he called.,5. It + be + 形容词 + for sb.)+
8、 动词不定式 这类句型常用形容词easy, difficult, hard, important, possible,wise等作表语,有时候为了强调不定式动作的执行者,常在不定式前加for sb,如: Its necessary for the young to master two foreign language. It is unwise to give the children whatever they want. 这类形容词有:easy, difficult, hard, important, possible,wise 6. It + be + 形容词 + of sb. + 动
9、词不定式,这类形容词常是表示心理品质,性格特征的形容词,如:kind, nice stupid, clever, foolish, polite, impolite, silly, selfish, considerate等。某人和这些形容词可以构成主系表结构。如: Its very kind of you to help me with the work. =You are kind to help me. It seemed selfish of him not to share his dictionary with others. =He seemed selfish not to s
10、hare his dictionary with others. 7. It + be +名词词组 + 动词不定式,如: It is not a good habit to stay up too late. 8. It + be + 名词或形容词 + 动名词,这类名词和形容词常常是:good, no good, no use, a waste of, useless, senseless等,如: Its a waste of time talking to her any more. It is no use arguing about the matter with him.,3. it
11、作形式宾语 (think, feel, make, find, believe, consider) + it + adj./ n./ to do/ doing / that,Can you make sentences ?,We think it important to help others. We found it impossible to finish the work in a day.We thought it no good working without a rest.He made it clear that we shouldnt break the school ru
12、les.,Eg:,Pay attention!,4. 强调句型,It is/ was +被强调部分that/ who +其他部分,e.g: (1). I saw him on the street last night.,I,It was I that/ who saw him on the street last night.,him,It was him that/ who I saw on the street last night.,on the street,It was on the street that I saw him last night.,last night,It w
13、as last night that I saw him on the street.,被强调部分为主语时,“被强调部分”用主格;被强调部分为宾语时,“被强调部分”用宾格。,(2). I didnt recognize him until he took off his dark glasses.,强调句型,It was not until he took his dark glasses that I recognized him.,倒装句,Not until did he take off his dark glasses that I recognized him.,Not until
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