hj黄小兔
至今未见during time的用法during which time等于during when,用以引导非限制性定语从句,属于介词+when/where引导定语从句的范畴。如果作为先行词的时间名词在主句、从句中都是作介词宾语,充当时间状语,但介词前后发生了变化,那么,定语从句的引导词就要使用“介词+ when /which time”(介词的使用要取决于从句中的搭配需要)。如果作为先行词的时间名词在主句中作主语、宾语(作介词宾语时,主句从句中的介词是同一个介词)、表语等,加上适当的介词后在定语从句中时间状语,那么引导词就要使用“介词+which”(介词的使用要取决于从句中的搭配需要)。①They stayed with me for two weeks, ____they drank all the beer I had.A. for which B. which time C. during which time D. during which②The book was written in 1946, ___ the education system has witnessed great changes.�A. when B. since which�C. since then D. since when有类似用法的还有“介词+where":① He stood at the window, ____ he could see what was happening.A. from where B. from which C.which D. at which② His head soon appeared out of one of the second storey window, from where he could see nothing but trees.
难忘那缕羁绊
be动词后面不能加动词的过去式,应该是动词的过去分词形式,属于被动语态的结构。
be动词意思和用法很多,一般的意思是:是。此种用法有多种变化形式:is、am、are、was、were、being、been、to be。另外be动词还有成为的意思。
根据句子中不同的人称、数和时间,型态,应该选择相应的be动词。
例1、 I was taught by Miss Zhao last year。
翻译:去年,我是由赵老师教的。
例2、 Those letters were wirtten by a famous writer。
翻译:那些信是由一位有名作家写的。
一、被动语态的构成
1、助动词be+及物动词的过去分词
2、情态动词+be+及物动词的过去分词
二、基本句型
1、肯定句:主语 +be+过去分词+by短语
2、否定句:主语+be+not+过去分词+by短语
3、一般疑问句: Be+主语+ 过去分词+by短语?
4、特殊疑问句:特殊疑问词+be+ 主语 + 过去分词 +by短语?