人教版七年级英语上册《My favorite subject is science》SectionA PPT课件(第2课时)，共14页。
Warming up
Make a conversation with your deskmate:
—What’s your favorite subject,Li Hong?
—My favorite subject is...
—Why do you like...?
—Because it’s...
Fill in the blanks with what, who or why.
1. A: _______ do you like history?
B: Because it's interesting.
2. A: _______ like math?
B: Eric does.
3. A: _______ is your favorite subject?
B: My favorite subject is P.E.
4. A: _______ is your science teacher?
B: My science teacher is Mr.Chen.
5. A: _______ do you like art? B: Because it's fun.
语法拓展
特殊疑问句
特殊疑问句是对句中某一部分内容提出疑问的问句，是指以“what, who,when,where,why,how等”开头的疑问句，也称wh-疑问句。特殊疑问句与一般疑问句不一样，它不能用yes或no回答。
1.构成：疑问词+其他句子成分？其中，疑问词包括疑问代词和疑问副词两种。
疑问代词有：what,who,which,whose,whom
疑问副词有：how,why,when,where
（1）倒装句结构：疑问词+一般疑问句？此时，疑问词及其所修饰的部分不作主语，即作宾语、定语、表语、状语等。
What do you like for lunch?（作宾语）
（2）陈述句结构：疑问句+谓语动词+宾语/表语/状语？此时，疑问词及其所修饰的部分作主语。
Who teaches you math?（作主语）
Whose shoes are on the chair?（与名词一起作主语）
2.疑问词小结：
（1）针对事物的名词提出疑问，疑问词用what。
What's your favorite subject?
（2）对指人的名词或代词提问用who。 Who's he?
（3）对具体时间提出疑问，用when。
When do you play basketball?
（4）对地点提出疑问，用where。 Where's my pen?
（5）对原因提出疑问，用why。 Why do you like art?
（6）对方式、程度、价格等提出疑问用how。
How much are the trousers?
（7）对年龄提问，用how old。 How old is he?
（8）对颜色提问，用what color。 What color is your pencil?
Exercise
一、用what,who或why填空。
1.A:_________ do you like history? B:Because it's interesting.
2.A: _________likes math? B:Eric does.
3.A:_________ is your favorite subject? B:My favorite subject is P.E.
4.A:_________is your science teacher? B:My science teacher is Mr. Chen.
5.A:_________do you like art? B:Because it's fun.
二、句型转换。
1.His favorite subject is science.（改为否定句）
His favorite subject ________ _________ science.
2.Her favorite subject is music.（改为一般疑问句）
_________ _________ favorite subject music?
3.My favorite subject is history.（对画线部分提问）
_________ _________ favorite subject?
4.Do you like art?（作否定回答）
_________,I _________.
Homework
1.Try to remember the new words.
2.Make a conversation by using the important sentences.
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