The fire lasted about four hours _the firefighters could con
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The fire lasted about four hours _the firefighters could control it.A.until B.before选B为什么?
直到消防员来大火已经持续4小时了 这么翻译应选A啊
直到消防员来大火已经持续4小时了 这么翻译应选A啊
① 如果主句(或简单句)中的谓语动词为延续性动词的肯定式,用until或before均可,但在意义上有一定的差别.如:
She lived in the house until he came back. 她在那所房子里一直住到他回来.(强调“到此为止”)
She lived in the house before he came back. 在他回来之前,她一直住在那所房子里.(强调“在……之前”)
② 如果主句(或简单句)中的谓语动词为非延续性动词的否定式,用until或before均可,且意义上没有差别.如:
The moon will not come out until / before the clouds disappear. 云散了月亮才会出现.
不同方面:
① 如果主句(或简单句)中的谓语动词为非延续性动词的肯定式,只能用before,不可用until.如:
He can come here before sunset. 在日落之前他能来这.
② 如果主句(或简单句)中的谓语动词为延续性动词的否定式,多用before,一般不用until.如:
He has not done anything before she comes. 在她来之前,他什么也没做.
③ 在It wasn't until ... that 强调结构中不用before.如:
It wasn't until this morning that I heard the news. 直到今天早上我才听到这个消息.
列情况下宜用before不用until.
1.主句为肯定式,谓语为终止性动词时只用before.
For example:
1). He fell asleep before I could take off his clothes.
2). We arrived there before it started to rain.
3). The holiday came to an end before I knew it.
4). He almost knocked me down before he saw me.
2.主句谓语动词强调动作的迟缓性,只用before,这时常伴有时间段状语或时间段暗示.
For example:
It was quite a long time before he found the elephant.过了很长时间,他才找到大象.
We had walked a long way before we found some water.走了很长的路我们才找到水.
We had sailed for two days before we saw the land.航行了两天我们才发现陆地.
It was midnight before my brother came home.我哥哥直到半夜才回来.
3.如果强调从句谓语动作未发生就发生主句谓语动作,只用before,这时常译为“未及(不等)……就……”
For example:
1)We can leave early in the morning before it gets too hot.趁天还不太热,我们上午早点离开.
2)I must write it down before I forget it.趁我还未忘,我必须把它记下来.
4.表示“与其说……倒不如……”,“与其……毋宁……”的意思时只用before.
For example:
I would give up my job before I agree to be dismissed.我与其被解雇还不如先辞职.
He will die of hunger before he steals.他宁愿饿死也不愿意去偷.
5.在某些特定句型中用before.
It was (not) long before…(不久)过了很长时间才…
It will (not) be long before…(不到)要过很长时间才会…
For example:
.It will probably not be long before they understand each other.
他们大概过不久就会互相了解.
It was not long before the whole country rose up.
不久全国人民奋起反抗.
三.下列情况一般使用until
1.主句是持续性谓语动词时,肯定,否定都可以,但意义完全不同,肯定表示动作终止,而否定表示动作开始.
For example:
1). We discussed the problem until/before he came back.
我们一直讨论到他回来.
2). We didn’t discuss the problem until he came back.
我们一直等到他回来才讨论问题.
2.Not…until…句型尽管在某些情况下可与before互换使用,但在强调句中一般仍用until;
1). It was not until he told me that I knew it.直到他告诉我我才知道这件事.
2).It was not until he finished his homework that he went home.直到完成作业他才回家.
3)放于句首时用until.
For example:
Antil he finished his homework ,he didn’t go home. 直到完成作业他才回家.
应注意:在使用not until时,若not until放于句首,句子应部分倒装. For example:
Not until he finished his homework,did he go home. 直到完成作业他才回家
二、until与before的区别
1.可直接换用的情况:在until能使用的句型中,即主句含有否定式终止性谓语动词或肯定式延续性动词,可与before直接替换,意义差别不大.如:
①The students won't go home until / before they finish their homework.学生们要先完成作业才能回家.
②The woman worked in the factory until/before 1990. 1990年以前这妇女在这家工厂上班.
2.不可换用的情况:当主句含有肯定式终止性谓语动词时,只能用before不能用until,且before常意为"没来得及……"或"……才……"等.如:
③Einstein almost knocked me down before he saw me.爱因斯坦差不多将我撞倒才看见了我.
④He had measured me before I could get in a word.我还没来得及插话,他就把我的尺寸量好了.
三、not until的倒装与强调结构
1.当Not until位于句首时,句子要倒装.其结构为:Not until+从句/表时间的词+助动词+(主句)主语+谓语+.如:
①Not until the teacher came in did the students stop talking.直到老师进来学生们才停止讲话.
②Not until next week will the sports meet be held.直到下周才开运动会.
2. not until的强调结构为:It is / was not until+从句/表时间的词+that+.上面两句改为强调句为:
③It was not until the teacher came in that the students stopped talking.
④It is not until next week that the sports meet will be held.
She lived in the house until he came back. 她在那所房子里一直住到他回来.(强调“到此为止”)
She lived in the house before he came back. 在他回来之前,她一直住在那所房子里.(强调“在……之前”)
② 如果主句(或简单句)中的谓语动词为非延续性动词的否定式,用until或before均可,且意义上没有差别.如:
The moon will not come out until / before the clouds disappear. 云散了月亮才会出现.
不同方面:
① 如果主句(或简单句)中的谓语动词为非延续性动词的肯定式,只能用before,不可用until.如:
He can come here before sunset. 在日落之前他能来这.
② 如果主句(或简单句)中的谓语动词为延续性动词的否定式,多用before,一般不用until.如:
He has not done anything before she comes. 在她来之前,他什么也没做.
③ 在It wasn't until ... that 强调结构中不用before.如:
It wasn't until this morning that I heard the news. 直到今天早上我才听到这个消息.
列情况下宜用before不用until.
1.主句为肯定式,谓语为终止性动词时只用before.
For example:
1). He fell asleep before I could take off his clothes.
2). We arrived there before it started to rain.
3). The holiday came to an end before I knew it.
4). He almost knocked me down before he saw me.
2.主句谓语动词强调动作的迟缓性,只用before,这时常伴有时间段状语或时间段暗示.
For example:
It was quite a long time before he found the elephant.过了很长时间,他才找到大象.
We had walked a long way before we found some water.走了很长的路我们才找到水.
We had sailed for two days before we saw the land.航行了两天我们才发现陆地.
It was midnight before my brother came home.我哥哥直到半夜才回来.
3.如果强调从句谓语动作未发生就发生主句谓语动作,只用before,这时常译为“未及(不等)……就……”
For example:
1)We can leave early in the morning before it gets too hot.趁天还不太热,我们上午早点离开.
2)I must write it down before I forget it.趁我还未忘,我必须把它记下来.
4.表示“与其说……倒不如……”,“与其……毋宁……”的意思时只用before.
For example:
I would give up my job before I agree to be dismissed.我与其被解雇还不如先辞职.
He will die of hunger before he steals.他宁愿饿死也不愿意去偷.
5.在某些特定句型中用before.
It was (not) long before…(不久)过了很长时间才…
It will (not) be long before…(不到)要过很长时间才会…
For example:
.It will probably not be long before they understand each other.
他们大概过不久就会互相了解.
It was not long before the whole country rose up.
不久全国人民奋起反抗.
三.下列情况一般使用until
1.主句是持续性谓语动词时,肯定,否定都可以,但意义完全不同,肯定表示动作终止,而否定表示动作开始.
For example:
1). We discussed the problem until/before he came back.
我们一直讨论到他回来.
2). We didn’t discuss the problem until he came back.
我们一直等到他回来才讨论问题.
2.Not…until…句型尽管在某些情况下可与before互换使用,但在强调句中一般仍用until;
1). It was not until he told me that I knew it.直到他告诉我我才知道这件事.
2).It was not until he finished his homework that he went home.直到完成作业他才回家.
3)放于句首时用until.
For example:
Antil he finished his homework ,he didn’t go home. 直到完成作业他才回家.
应注意:在使用not until时,若not until放于句首,句子应部分倒装. For example:
Not until he finished his homework,did he go home. 直到完成作业他才回家
二、until与before的区别
1.可直接换用的情况:在until能使用的句型中,即主句含有否定式终止性谓语动词或肯定式延续性动词,可与before直接替换,意义差别不大.如:
①The students won't go home until / before they finish their homework.学生们要先完成作业才能回家.
②The woman worked in the factory until/before 1990. 1990年以前这妇女在这家工厂上班.
2.不可换用的情况:当主句含有肯定式终止性谓语动词时,只能用before不能用until,且before常意为"没来得及……"或"……才……"等.如:
③Einstein almost knocked me down before he saw me.爱因斯坦差不多将我撞倒才看见了我.
④He had measured me before I could get in a word.我还没来得及插话,他就把我的尺寸量好了.
三、not until的倒装与强调结构
1.当Not until位于句首时,句子要倒装.其结构为:Not until+从句/表时间的词+助动词+(主句)主语+谓语+.如:
①Not until the teacher came in did the students stop talking.直到老师进来学生们才停止讲话.
②Not until next week will the sports meet be held.直到下周才开运动会.
2. not until的强调结构为:It is / was not until+从句/表时间的词+that+.上面两句改为强调句为:
③It was not until the teacher came in that the students stopped talking.
④It is not until next week that the sports meet will be held.
The fire lasted about four hours _the firefighters could con
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last the firefighters put out the fire in the supermarket.
1.The meeting lasted two hours.
The firefighters arrived and p( ) out the fire