... been ill for three days.Mary has been ill since three days ago这种用法和现在完成进行时的表示从过去某时开始一直持续到现在的动作,并且还将持续下去.的用法有何区别It has been raining for two hours.与It has rained for two hours.两句是否都可以理解...
... more information about the first noun. 用以连接2个名词或1个名词和1个现在分词,其中第2个名词或现在分词限定第1个名词或给出有关第1个名词的更多信息 [n PREP n/-ing]the problem of having a national shortage of teachers.一个全国性教师短缺问...
...day.
Every Sunday he helps atthe Old People's Home.
A. on B. in C. during D. execpt
对于该题中help后面没有宾语,我感到奇怪,回家查:《英语常用词用法·详解大词典》席玉虎p1585:help用作不及物动词时常表示“有用”...
He had no children and was killed in an accident—leaving everything to his wife. 句子中的现在分词短语leaving everything to his wife 是结果状语吧!请问:前面为什么不用逗号,而用的是破折号呢?换句话说:用作结果状语的现在分词前可以用破折号...
--Jane Zhang is going to hold a concert here in July.--Really? ______ exciting news!A. How B. What an C. What D. How an此题答案为C, 请问一下news 为不可数名词,前面加了形容词也不能加冠词吗?
This story, if it does nothing else, will tell young people how we old people lived in the war days.请教老师句中 if it does nothing else 应该怎样理解比较好呢?“如果没有其他作用”?