选词填空 could/be able to
7 . I wrote down the telephone number so that I _________ remember it.
8 . It was rainy and dark that night, but they ________ find his house at last.
could
8 . were able to
【解析】
7 .考查情态动词。句意:我写下了电话号码,以便我能够记住它。根据上文的 wrote down 可知,此处表示过去的能力, could 和 be able to 都可以表示过去的能力, be able to 的过去时表示 “ 成功做成了某事 ” ,根据句意,此处没有说明是否记住了,故用 could ,故填 could 。
8 .考查时态。句意:那天晚上又下雨又黑,但他们终于找到了他的房子。表示过去成功做成了某事,用 be able to 的过去时,主语 they 是复数,谓语动词用复数,故填 were able to 。
一般过去时的概念:
一般过去时表示过去某个时间里发生的动作或状态;过去习惯性、经常性的动作、行为;过去主语所具备的能力和性格。
一般过去时的用法:
1、表示过去发生的动作或存在的状态,常与表示过去时间的副词如:yesterday,last week,two hours ago等连用。
如:My family moved here five years ago. 我家五年前搬到了这里。
I was born in 1973. 我生于1973年。
2、表示过去一段时间经常或反复发生的动作。这时可与频度副词如:often,usually,always等连用。
如:He always worked in tonight those days. 那些日子他总是工作到深夜。
I often left on business in 1987. 1987年我经常出差。
注:表示“过去经常,而今不再”时,要用usedto.
如:I used to read newspaper after breakfast. 我过去经常早饭后看报纸。(意指现在已不是这样)
The children often swam in this river. 孩子们过去经常在这条河里游泳。
3、表示过去发生的一连串动作。
如:He put down the heavy box, took out the keys, and opened the door. 他放下这沉重的箱子,掏出钥匙开了房门。
注:过去发生的一连串动作,若用and,or,but等并列连词连接,则一律用过去式。
如:They moved the chairs to the table, sat down and began to have supper. 他们把椅子搬到桌边,坐下开始吃饭。
4、在时间和条件状语从句中,用一般过去时表示过去将来的动作。
如:He said that he would let me know as soon as he got the information. 他说他一得到消息就立即让我知道。
Mary told me that she would stay at home if it rained. 玛丽告诉我如果下雨她就呆在家里。
一般过去时的特别用法:
1、句型:It is time for sb. to do sth "到……时间了" "该……了"。
例如:It is time for you to go to bed.你该睡觉了。
It is time that sb.did sth. "时间已迟了" "早该……了"。
例如:It is time you went to bed. 你早该睡觉了。
2、would(had)rather sb.did sth. 表示'宁愿某人做某事'。
例如:I'd rather you came tomorrow. 还是明天来吧。
3、wish, wonder, think, hope等用过去时,作试探性的询问、请求、建议等,而一般过去时表示的动作或状态都已成为过去,现已不复存在。
例如:I thought you might have some. 我以为你想要一些。
比较:Christine was an invalid all her life.(含义:她已不在人间。)
Christine has been an invalid all her life.(含义:她现在还活着)
Mrs. Darby lived in Kentucky for seven years.(含义:达比太太已不再住在肯塔基州。)
Mrs. Darby has lived in Kentucky for seven years.(含义:现在还住在肯塔基州,有可能指刚离去)
注意:用过去时表示现在,表示委婉语气。
1)动词want, hope, wonder, think, intend等。
例如:Did you want any thing else? 您还要些什么吗?
I wondered if you could help me. 能不能帮我一下。
2)情态动词could, would。
例如:Could you lend me your bike? 你的自行车,能借用一些吗?
登录并加入会员可无限制查看知识点解析