it用法在写作中的运用.ppt

1. it作代词时的用法； 2. it作形式主语和形式宾语； 3. it引导强调句型； 4. it 固定短语和常用句型 5. it的用法在写作中的应用。 objectives It is cold today. It is a three minutes’ walk from classroom to the playground. I have a dictionary. It makes me smart. Think about what “it” refers to in the following sentences. Warm up He smokes in bed and I don’t like it.  Ⅰ. 代词 （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。 What’s this? —It’s a knife. Whose watch is that? —It’s mine. （3）起指示代词的作用，指一个人或事物。 Who is knocking at the door? —It’s me. （4）指环境情况等。 It was very quiet in the library. （5）指时间、季节等。 What time is it? —It’s eight o’clock. （6）指距离。 It is a long way to the school. necessary It +is/was + adj. important + to do sth. / that从句 … said It +is / was done known + that从句 suggested … Ⅱ. 形式主语 one’s duty It +is /was + n. a great honor + to do sth. / that从句 … 思考： 当形容词为 strange/natural/essential/important /desirable 等时 当done为required, suggested, demanded, recommended 等时 从句必须用什么结构？ To learn English well is important for us. That you missed the exciting football match is a pity. That we students should be kind to others is necessary. That 16 people were killed in the disaster was reported. It is important for us to learn English well. 3. It is necessary that we students should be kind to others. 2. It’s a pity that you missed the exciting football match. To learn English well That you missed the exciting football match That we students should be kind to others That 16 people were killed in the disaster 4. It was reported that 16 people were killed in the disaster. 把下列句子改写成 it 做形式主语的句子： find possible think necessary +to do/doin