语法（五）—介词Ⅰ，介词的相关概念和用法：1，介词的概念：介词是一种用来表示词与词、词与句之间的关系的虚词，起“媒介”作用。2，介词后加宾语，即名词或代词性质的词。例如： I am in school . in the morning 例如： Thanks for helping me . What about going for a walk ?3，介词的分类：①，时间介词；②，地点介词；③，方式介词；④，目的介词；⑤，原因介词；⑥，运动方向介词；⑦，比较介词；等等等等。Ⅱ，介词的分类：一、表示时间的介词——常考的时间介词有at, in, on“在⋯⋯”1. at表示“在某一时间点”，或用来表示不确定的时间和短期的假日、时节等。如：at six o’clock, at Easter2. in表示“在某一时间段”，如用在月、季、年份、时代、世纪等。如：in July/summer/2000/ancient times/the 1999’sin the morning/afternoon/evening表示在特殊或具体的日子。如：on Saturday, on Saturday morning, on the morning of August 1st , on Mid-autumn Day4. 注意：当表示时间的名词前，有this / last / next / every时，前面不需要加介词。【小练习】：There are four seasons _________ a year.What do you wear _________ winter?We have no classes _________ Sundays.My birthday is _________ September.My birthday is _________ June 18th. ( （） 1 Children get gifts ____ Christmas and ____ their birthdays.A.on; on B. at; on C. in; in D. in; on( ) 2 -There is nothing ____tomorrow afternoon, is there? -No. We can have a game of table tennis. A. on B. in C. out D. up ( ) 3 A lot of students in our school were born____March, 1981. A. in B. at C. on D. since ( ) 4 Tim suddenly returned____ a rainy night. A. on B. at C. in D. during ( ) 5 My grandfather was born____Oct. 10, 1935. A. on B. in C. at D. of ( ) 6 The train is starting___five minutes. A. in B. at C. for ( ) 7 Mike does his exercises ____ seven _____ the evening. A. on; to B. at; in C. by; of D. at; on( )8She will come back _______ next week. A. in ...
