2012.1.236.Tom ____ in the library every night over the last

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/29 15:02:01

2012.1.23
6.Tom ____ in the library every night over the last three months.
A.has been doing B.had been doing 选A 为什么可以填has done
33.Today,we'll discuss a number of cases___ beginners of English fail to use the language properly.
A.why B.where 选A不行吗?为什么?

6：该题考查动词的时态.句意为“在过去的三个月里,Tom每天晚上都在图书馆里学习.”题干中出现的over the last three months,是明显提示用现在完成进行时或现在完成时.所以除了选择填A外,也能填has done.但还是用现在完成进行时态好点.
7.这句话的中文意思是：今天,我们要讨论一些案例,在这些案例中,英语初学者们没有恰当地使用语言.
所以,where引导的是定语从句.where是关系副词.在定语从句中,where,why,when 是关系副词.关系副词=介词+whom/where
解析如下：
A项的which 前面如果加上in也可以.C项不符题意.因为主从句之间根本就没有因果关系.B项as不符题意.因为作为关系代词,它的作句子成分主语或宾语,实际上主从句主语、宾语成分具备.如果作为连接词引导原因状语从句,主从句又没有因果关系.D项where表示“在.地方”,在句中作用为关系副词.

2012.1.236.Tom ____ in the library every night over the last Tom ___（work） in the library every night over the last 3 mon Tom in the library every night over the last three months. Tom_in the library every night over the last 英语时态语法问题,Tom ___（work） in the library every night over the l Tom_______ in the library every night over the last three mo Tom have been working in the library every night 询问英语时态问题1.tom（ has been working ）in the library every night Tom ____ into the room secretiy last night. over night,over the night,in a night的区别 i think i saw mary worked in the library last night .— Where were you last night?— I was in the library.I ______