—Does your sister work as a teacher in Canada? —No, but she once ______ there for five years． A．taught B．had taught C．has taught D．would teach改题答案为A,可不可以用完成时啊，谢谢！
...老师您好，我想请教一下您:1.Jack must have gone out very early ,for he hadn't shown up at the breakfast.2.Who that you had ever seen is stronger than him?老师我想问下，这两个句子这里为什么要用过去完成时呢（for he hadn't shown up…和who that you had…)，我感...
The abuse resulted in a six-week hospitalization
for injuries, among them a protruded
tailbone.——From：Time问题一：protruded作为过去分词在句中为何看起来是主动关系？即tailbone
protrudes。问题二：逗号后的among…句子成分进行逐一分析，即among them和ta...
...短有关吗？各位高人能否具体解释说明？we have been waiting for over an hour.这个over是介词，并且是over an hour作for的宾语吗？还是over是副词作下加状语？he talks quite slowly,这个quite slowly是副词词组修饰talk，并且其中quite是下加状语吗？...
...oing
something”。例如：They’ve decided to
postpone having a family for a while. 他们决定推迟一段时间要孩子。164.practise（P2000）作“to
do an activity, often regularly, in order to improve your skill or to prepare
for a test 练习，实践，实习”解时，构成“prac...
...性，还存在疑问：2.23节将She sent a card
to Jim和She left a card for Jim.归为SVOA.显然A为必具性（Huddleston是按照补语的），A是和主语相关，还是宾语相关？the card was for
Jim不是也可以吗？（此时仍然产生为何这种句子不是无动词）同样，...
...怎么判断是定语从句还是宾语从句。例如：It is a time for family reunions, so millions of Chinese peoplewill return to their hometowns or travel around the country in what has become the largest human migration in the world.如果前...
...不得不另找一条路线。The government will have to take the blame forthe riots. 政府将不得不对骚乱承担责任。You will have to answer for your crimes one day. 你总有一天要因为你的罪行而得到报应的。Following the storm, a great many houses will have to be rebuilt...
...ack Friday morning. They had advertised a bike that she wanted to purchase for our son. We stood with a very large crowd, waiting forthe manager to blow the whistle. After a while the whistle blew. It was like throwing a basket of chum into a tank of sharks. I told my wife that if we obtained a bik...
...面有些例句，括号里是被强调部分I was simply (taking my dog for a walk).We judge them purely (on the final examination).You can get a B grade just (for that answer).At least (ten workers) reported sick yesterday.(The girls) especially objected to his manners.(The workers,) in particular...
...onsible 的用法：It is irresponsible of sb to do sthIt is irresponsible for sb to do sth参见：http://ask.yygrammar.com/q-26640.html我想请问一下，如果是 responsible 呢？怎么用？It is responsible of sb to do sthIt is responsible for sb to do sth我在词典上好像没有查到...