since 和 for①I’ve been running (half an hour ago/for half an hour)②Sam has been skating(since 9 o'clock/an hour ago)③-When did you get the first stamp?-(For six years/Six years ago)
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![since 和 for①I’ve been running (half an hour ago/for half an hour)②Sam has been skating(since 9 o'clock/an hour ago)③-When did you get the first stamp?-(For six years/Six years ago)](/uploads/image/z/12779846-62-6.jpg?t=since+%E5%92%8C+for%E2%91%A0I%E2%80%99ve+been+running+%EF%BC%88half+an+hour+ago%2Ffor+half+an+hour%EF%BC%89%E2%91%A1Sam+has+been+skating%28since+9+o%27clock%2Fan+hour+ago%29%E2%91%A2-When+did+you+get+the+first+stamp%3F-%28For+six+years%2FSix+years+ago%29)
since 和 for①I’ve been running (half an hour ago/for half an hour)②Sam has been skating(since 9 o'clock/an hour ago)③-When did you get the first stamp?-(For six years/Six years ago)
since 和 for
①I’ve been running (half an hour ago/for half an hour)
②Sam has been skating(since 9 o'clock/an hour ago)
③-When did you get the first stamp?
-(For six years/Six years ago)
since 和 for①I’ve been running (half an hour ago/for half an hour)②Sam has been skating(since 9 o'clock/an hour ago)③-When did you get the first stamp?-(For six years/Six years ago)
前两个问题考的是现在完成进行时.这个时态后面如果接时间的话,可以用for或since.它们的区别是:for后面要接一个时间段,也就是多久;而since后面要接一个时间点,表示从那个时间点开始,一直到现在.
1.选择for half an hour
如果 half an hour ago 前面有since的话,是正确的.
2.选择 since 9 o'clock 表示从9点开始一直到现在
如果 an hour ago 前面加上 since的话,是正确的.
3.这个句子是一般现在时.问的是,“你什么时候得到第一张邮票/“
要回答一个时间点,即”什么时候“
因此要选择 six years ago
1. for half an hour ( 现在完成时,用for, half an hour ago半个小时前,用在一般过去时。翻译: 我已经跑了半个小时了。)
2 since 9 O'clock. 还是现在完成时, 翻译: Sam自从9点就滑冰了。
3 six years ago. ( did.. get是一般过去时,所以用一般过去时的时间状语: six years ag...
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1. for half an hour ( 现在完成时,用for, half an hour ago半个小时前,用在一般过去时。翻译: 我已经跑了半个小时了。)
2 since 9 O'clock. 还是现在完成时, 翻译: Sam自从9点就滑冰了。
3 six years ago. ( did.. get是一般过去时,所以用一般过去时的时间状语: six years ago六年前, 翻译: 你什么时候得到的第一张邮票? 六年前)
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1.for half an hour
2.since 9 o'clock
3.Six years ago
1。 选择for half an hour
如果 half an hour ago 前面有since的话,是正确的。
2。选择 since 9 o'clock 表示从9点开始一直到现在
如果 an hour ago 前面加上 since的话,是正确的。
3。这个句子是一般现在时。问的是,“你什么时候得到第一张邮票/“...
全部展开
1。 选择for half an hour
如果 half an hour ago 前面有since的话,是正确的。
2。选择 since 9 o'clock 表示从9点开始一直到现在
如果 an hour ago 前面加上 since的话,是正确的。
3。这个句子是一般现在时。问的是,“你什么时候得到第一张邮票/“
收起
for half an hour
ince 9 o'clock
For six years
(for +一段时间,since+时间点。所以如果是年的话,since后面要加ago)