It was about seven or eight days ago ________ we heard the news that he had gone to London.这是一个强调句，空格处填that肯定是对的，我的猜想是：由于被强调的是时间，请问这里除了填that外，也可填when吗？
Traditionally, pollination by wind hasbeen viewed as a reproductive process marked by random events in which the vagaries of the wind are compensated for by the generation of vast quantities of pollen, so that the ultimate production of new seeds is assured at the expense of producing much more pol...
Adonis is an elegy for John Keats whose early death from tuberculosis Shelley believed had beenhastened by hostile reviews.请问：believed had beenhastened是什么意思？
...ifornia ,and realizing that not every veteran(老兵) in the cemetery has a flag. So April told him “son, you are going to complain about something , you have to do something about it or let it go”老师，这个空给的是what \ if \ weat...
下面这道题是2012年高考英语的重庆卷中的考题：Sam hasbeen appointed ______ manager of the engineering department to take ______ place of George. A. 不填; 不填 B. the; 不填 C. the; the D. 不填; the本题答案是 D，选 C 不行吗？表示职位...
...“would/should/might/could
have+动词过去分词”。如：If he had been here
yesterday, he might have told us. 如果他昨天在这儿，他就可能告诉我们了。If I had worked
harder at school, I’d have got a better job. 要是我上学时努力一些，我就会有较好的工作了...
...actor design had progressed to the stage where a hydraulic lift system had been developed, as had the power take-off shaft used to drive trailed implements such as a self-binder or a manure spreader.as 直接接动词，as 和 had 之间省略的主语是什么？as 在这里是什么意思？
He complained about having been kept waiting so long.我知道complain不及物，因此需要介词about，那about后面的having been kept是什么成分？about和动名词的完成式的被动式合起来又是什么状语？waiting作什么成分？
...es ____ on the plates, we decided that they were made in Song Dya、having been markedb、marked本题我选的是A，语法题做多了，考虑到mark先于decide，这样理解可以吗？B是普通陈述一般态？看张满胜书中说”having been done“不作定语，只做状语。请老...