(七年级英语)一般现在时的详细讲解-配套针对性综合练习.doc

七年级英语）一般现在时的讲解一、一般现在时定义：①经常性、习惯性的动作或存在的状态e.g. I go to school on foot. e.g.：He is very busy now. e.g.：She is ten.（她十岁了 e.g.：Kate is in the classroom. （凯特在教室里e.g.: We often call to each other.（我们时常相互通信）③表示主语现在的性格、特征、能力e.g. He can swim. e.g.：I work hard. e.g.：I like watching TV.e.g.：I like English. We can speak English.④表示客观真理e.g. There are seven days in a week. e.g.：The moon moves round the earth.e.g.：The sun is bigger than the moon. （太阳比月亮大二、一般现在时的构成：1、当谓语动词是be 动词am, is ,are时， 　1）肯定句式 主语 ＋ am/ are/ is ＋ 其他。

　2）否定句式 主语 ＋ am/ are/ is ＋ not ＋ 其他 3）一般疑问句 Am/ Is/ Are ＋ 主语 ＋ 其他？　肯定回答 Yes, 主语（必须是代词）＋ am/ is/ are　否定回答 No, 主语（必须是代词）＋ am/ is/ are ＋ not（必须用缩写形式 isn't/aren't）e.g.：Danny is a good student. Danny isn’t a good student. Is Danny a good student? Yes, she is. No,she isn’t.2、当谓语动词是行为动词（实义动词）时　1）当主语是第一人称 (I / we) ; 第二人称 (you) 及第三人称复数 (they及复数的名词)时：①肯定句 主语 ＋ 行为动词原形 ＋ 其他　 ②否定句 主语 ＋ don’t ＋ 行为动词原形 ＋ 其他　 ③一般疑问句 Do ＋ 主语 ＋ 行为动词原形 ＋ 其他　　 肯定回答 Yes, 主语（必须是代词）＋do　　 否定回答 No, 主语（必须是代词）＋don’te.g.：They have lunch at 12:00. They don’t have lunch at 12:00. Do they have lunch at 12:00? Yes, they do. No, they don’t.　2）当主语是第三人称单数 (she/ he/ it及单数的名词) 时　　①肯定句 主语 ＋ 行为动词的单三形式 ＋ 其他　 ②否定句 主语 ＋ doesn’t ＋ 行为动词原形 ＋ 其他　　③一般疑问句 Does ＋ 主语 ＋ 行为动词原形 ＋ 其他　　 肯定回答 Yes, 主语（必须是代词）＋ does　　 否定回答 No, 主语（必须是代词）＋ doesn’te.g.：Jenny speaks English very well. Jenny doesn’t speak English very well. Does Jenny speak English very well? Yes, she does. No, she doesn’t.3.当谓语动词是情态动词+行为动词时：1）肯定句 主语 ＋（情态动词 +行为动词原形） ＋ 其他　 2）否定句 主语 ＋（情态动词 +not＋ 行为动词原形） ＋ 其他　 3）一般疑问句 情态动词 ＋ 主语 ＋ 行为动词原形 ＋ 其他？　　 肯定回答 Yes, 主语（必须是代词）＋情态动词 　　 否定回答 No, 主语（必须是代词）＋情态动词 +not（必须是缩写形式can’t, mustn’t, shouldn’t, needn’t等）e.g.：Tom can speak Chinese. 汤姆会说汉语。

Tom can’t speak Chinese. 汤姆不会说汉语Can Tom speak Chinese? 汤姆会说汉语吗？ Yes, he can. No, he can’t.三．动词第三人称单数词尾变化有三种形式：(1)一般动词在词尾加-s，-s在清辅音后读／s／，在浊辅音或元音后读／z／，ds读／dz／，ts读／ts／如：help→helps，know→knows，get→gets，read→reads(2)以字母s，x，ch，sh或有些以o结尾的动词加-es，-es读／iz／如：guess→guesses，fix→fixes，teach→teaches，wash→washes注意：go→goes do→does(3)以辅音字母+y结尾的动词，先变y为i，再加-es，-ies读／iz／如：carry→carries，fly→flies注：在play→plays／pleiz／，say→says／sez／中，字母y前为元音字母，第三人称单数形式直接在动词后面加-s4)特殊词例外如：be→is，have→has四、对do的理解例：We don’t (not do) our homework in the afternoon.答案：don’t do解析：do是一个比较难理解的词，它有三个含义: a)是所有行为动词的总称；b)是助动词，无实义；c)是一个具体的行为动词“做，干”。

此句中给出的do指“做，干”，not指把此句变为否定句，故须在do前加助动词don’t闯关练习　　I.用be的适当形式填空　　1.---How____ you? ---I____ fine.　　2.I___ David,and my family name___ Green.　　3.---What color ___ your clock? ---It___ white.　　4.---What___ this in English?---It___ an apple.　　5.Toy___my brother.David____my brother,too.They ___ my brothers.　　6.Look!These____apple trees.　　7.We____ good students and you____ good teacher.　　8.My sister and my brother_____ students.　　9.Five and three ____ eight.　　10.____your card number 5578?　　11.Where_____ your pencils?　　12.Thses sweaters ______ fifty dollars.　　13.How much ____ his jacket?　　14.My brother’s birthday____ December 11th.　　15.When _____ Kate’s birthday?　　II.将下面的句子变成一般疑问句并作出肯定及否定回答1.      That is my football.2.      Those are his books.3.      Jim and Tom are good friends.4.      My birthday is November 1st.5. His son is twelve years old.　　III.将下面的句子变成否定句　　1.      His card is on the table.　　2.      Thses are my parents.　　3.      Bob and Tony are our friends.　　4.      These things are five dollars.　　5.      The girl is his sister.　　IV.划线提问　　1.      Our teachers are in the classroom.　　2.      The girl’s telephone number is 032-55746.　　3.      Her pen is black.　　4.      September 10th is Teachers’ Day.　　5.      Thery are thirteen years old.　　6.      The boy is fine.　　7.      The old man is my grandfather.8.     These socks are five yuan.　　II.当谓语动词是实义动词时　　闯关练习　　I..将下面的句子变成一般疑问句并作出肯定及否定回答1.I have a baseball.2.Meria likes apples very much.3.He plays Ping-pang every day.4.We watch TV in the evening.5.Mr Wang often buys lots of things.6.Janey and Mary go to school at 7:30.　　II. 将下面的句子变成否定句　　1.I need a bag for sport.　　2.He wants to go to a movie.　　3.She often goes to see Beijing Opera.　　4.The girl has an egg for breakfast.　　5.We play basketball every day.　　6.My teacher knows my name.　　7.It sounds very interesting.　　III.划线提问　　1.     He likes apples and milk for lunch.　　2.     Mr.Liu plays Ping-pang every day.　　3.     His sister wants to go to a movie.4.     We play basketball every day.　　IV.用所给词的适当形式填空　　1．____ her sister ______ (have) a tennis racket?　　2._____ your friend ______ (like) basketball?　　3.We _____ (play) football every day.　　4.It_____ (sound) very 。