搜狗做题网before和ago的用法问题
来源：学生作业帮 编辑：搜狗做题网作业帮 分类：英语作业 时间：2024/05/03 01:45:28
before和ago的用法问题
better than before比以前好多了,before可以换成ago吗?
better than before比以前好多了,before可以换成ago吗?
ago和before都可用作副词与时间段连用,表示“……之前”,但它们的用法有所不同.
“时间段 + ago”,表示从说话时刻算起的若干时间以前,常用于一般过去时.“时间段 + before”,表示从过去某时起若干时间以前,与过去完成时连用.
He met her three days ago.他三天前碰到过她.
He said he had met her three days before.他说他三天前碰到过她.
ago不能单独使用,而before可单独使用,且与一般过去时或现在完成时连用,表示“不明确的以前”.
I have never seen him before.我以前从未见过他.
I told you before.我以前告诉过你.
注 意:
before可作介词,后接时间点；也可作连词,引导时间状语从句.而ago不能用作介词和连词.
He will be back before five o’clock.他会在五点钟以前回来.
I’ll ring you up before I leave home.我离家以前将给你打电话.
自我测试下：
根据句意,用ago或before填空.
1.I’ll ring you up______I leave home.
2.He finished the work five days______.
3.He often went to the park______.
4.We saw the film two months______.
5.When we finally got there,the team had left an hour______.
答 案:
1.before
2.ago
3.before
4.ago
5.before
“时间段 + ago”,表示从说话时刻算起的若干时间以前,常用于一般过去时.“时间段 + before”,表示从过去某时起若干时间以前,与过去完成时连用.
He met her three days ago.他三天前碰到过她.
He said he had met her three days before.他说他三天前碰到过她.
ago不能单独使用,而before可单独使用,且与一般过去时或现在完成时连用,表示“不明确的以前”.
I have never seen him before.我以前从未见过他.
I told you before.我以前告诉过你.
注 意:
before可作介词,后接时间点；也可作连词,引导时间状语从句.而ago不能用作介词和连词.
He will be back before five o’clock.他会在五点钟以前回来.
I’ll ring you up before I leave home.我离家以前将给你打电话.
自我测试下：
根据句意,用ago或before填空.
1.I’ll ring you up______I leave home.
2.He finished the work five days______.
3.He often went to the park______.
4.We saw the film two months______.
5.When we finally got there,the team had left an hour______.
答 案:
1.before
2.ago
3.before
4.ago
5.before