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by在英语的学习中使用的频率还是比较高by表示方式,可以用在时间、地点之前,还可以放在反身代词之前……具体用法总结如下:1. by+交通工具表示凭借、乘坐某种交通工具,在句中作方式状语如:by car, by plane, by bike 等eg. She went to Beijing by air.2. by +doing sth.意为\"通过做某事”,表示方式、方法、手段等,在句中做方式状语【经典考题】You can improve your English ___B___practicing more.A. by B. with C. of D. in注意: 对by引导的介词短语作方式状语, 提问时用how—— How do you study for a test?—— By listeningto tapes.3. (表示位置)在……近旁; 在身边; 靠近eg. On a cold evening,It is pleasant to sit bythe fire.4. (表示时间)不迟于,在什么之前eg. Be here by four o'clock. (4:00之前到这儿)【经典考题】How many English songs had you learned___A___ the end of last term?A. by B. with C. at D. in解析: by the end of last term, 译为”到上个学期末“5. 表示方向,从……中经过eg. They came in bythe back door. ( 他们是从后门进来的)6. 做介词, 译为“经过”eg. He walked by me without speaking. (他走过我的身边,没有说话)7. 用在反身代词之前,译为“独自”eg. Sarah couldn't move the heavy box by herself.8. 表示动作的执行者,用于被动语态,译为:”被,由“eg. The glasses are usedby us.9. 表示“根据“,“按照”的意思eg. What time is it by your watch? (你的表几点了?)10. 和take,hold等动词连用,说明接触身体的某一部分eg.I took him by the hand(我拉住了他的手)11.(乘或除)以4 divided by 2 is 2. (4除以2等于2)12. 表示幅度Violent crime has increased by10 percent since last year.( 暴力犯罪自去年以来增加了10%)13、以…计;按…计Billing isby the minute. (以分钟计账)14. 用于一些固定短语中, 如:by the way 顺便问;one by one 一个接一个的;step by step 一步步地;day by day 一天接一天地;by accident 偶然地… By的用法很多,但其实很多意思可以整合起来记忆,希望通过整理,对大家学习“by\"的知识有些帮助
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