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表示时间的介词和频度副词.doc

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时间介词(at, in ,on) 的用法 1. at (1)时间的一点、时刻等。如: They came home at seven o’clock。 (at night, at noon, at midnight, at ten o'clock, at daybreak, at dawn). (2)后面接表示岁数的词。 Children in China start school at 6 years old. (3)较短暂的一段时间.可指某个节日或被认为是一年中标志大事的日子。如: He went home at Christmas (at New Year, at the Spring Festival)。 2. in (1)在某个较长的时间(如世纪、朝代、年、月、季节以及泛指的上午、下午或傍晚等)内。如: in 2004, in March, in spring, in the morning, in the evening, etc (2) 在一段时间之后,常用于将来时。 He will arrive in two hours. These products will be produced in a month. 3. on (1)具体的时日和一个特定的时间,如某日、某节日、星期几等.如: On Christmas Day(On May 4th), there will be a celebration. (2)在某个特定的早晨、下午或晚上。如: He arrived at 10 o'clock on the night of the 5th. (3)准时,按时。如: If the train should be on time, I should reach home before dark. 表示频率的副词用法详解 一、常见的频率副词 always,usually,often,sometimes, seldom,never. 1) always表示的频率为100%,意思是”总是、一直、始终"。 I always do my cleaning on Sundays。 我总是在星期天搞卫生. 2)usually与always相比,表示的频率要低些,约为70%-80%.意思是”通常". Plants are usually green。 植物通常是绿色的。 Usually she goes to work by bus. 她通常乘公共汽车去上班。 3)often的频率比usually又略低些,约为60%-70%,意思是"经常"、"常常”。 Do you often write to them? 你常给他们写信吗? Does Fred come here often? 弗雷德常来这儿吗? 4)sometimes的频率比often又低些,约为50%>sometimes>30%,意思是“有 时、不时”。 Jenny usually eats a sandwich for lunch. Sometimes she eats soup. 5)seldom 的频率比sometimes还要低些约为20%左右,意思是“很少”。 My father was seldom at home on Sundays。 我父亲星期天很少在家。 6)never与always完全相反,是100%否定,意思是“从不,决不,总是不“. I can never stop。 我绝不会停止。 Li Ming never wears dresses。 李明从不穿裙子。 I would never do anything to hurt him. 我绝不会做任何伤害他的事情。 二、频率副词示意图 always never usually often sometimes seldom 0 三、频率副词在句中的位置 通常频率副词放在行为动词之前, be动词,情态动词或助动词之后。但是sometimes最活跃。它既可以在句中也可以在句首,还能在句末。其它词如often 也可以放在句中也可以放在句末,这里就不一一列举了。 四、注意的问题 always的完全否定形式是never,部分否定形式是not always。例如:She always wears a dress. 她总穿裙子。(改否定句) 1)She never wears a dress。 她从不穿裙子。(彻底否定) 2)She does not always wear a dress。 她不总穿裙子。(部分否定) 有如:The rich are not always happy.富有未必是幸福的。 时间介词用法练习: ( ) 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. He 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 D.still ( ) 7. Mike does his exercises ____ seven _____ the evening。 A。 on; to B。 at; in C. by; of D。 at; on ( ) 8. Children wake up very early____the morning of Christmas Day。 A。 in B。 on C. for D。 at ( ) 9 ____ a cold winter morning, I met her in the stfeet. A。 In B. On C。 At D。 For ( ) 10 It happened to be very cold____ the morning of our sports meeting. A. at B. on C。 with D. of ( ) 11。 Why did you get up so early ___ this morning。 A。 on B. / C。 at D. in ( ) 12。 He went to Shanghai___ September 3, 1991 and came back___ a cold morning last year. A。 in; on B. on; in C。 on; on D. in; ia ( ) 13。 Lucy was born____ the night of May 12, 1984. . 。.. A。 on B. in C。 at D。 to ( ) 14. Mrs Brown came to China ____ 1996. A。on B。 of C. to, D。 in ( ) 15 ___ the morning of November 20, 1915, the workers came to Chicago to show their mourning of Joe Hill。 A. On B. In C. On D. At ( ) 16。 Ann moved___Hangzhou___September, 1992. A。 /; in B. to; in C。 to; on D, in; in ( ) 17。 They started off___an autumn afternoon. A. during B。 at C。 in D. on ( ) 18. He often goes ____ school ____ six thirty ____ the morning。 A. for; to; in B. to; at; in C。 to; for; at D, for; at; to ( ) 19. He arrived ___ Shanghai ___ 9: 30 ___ March 5。 A. at; in; at B. to; on; at C. in; on; at D。 in; at; on ( ) 20。The English teacher told me to get there____ half past ten. A: in B。 at C。 on D. of 4
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