神马作文网The family has been in American_.
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The family has been in American_.
a.for a last year b.since last year
为何选 a
I _ for mushrooms but I haven't found any.
a.have been looking b.have looked
为何选 a,b 错在哪
It was so dark outside that he_.
a.didn't dare to go out to fetch water
b.dare not to fetch water
为何选 a
a.for a last year b.since last year
为何选 a
I _ for mushrooms but I haven't found any.
a.have been looking b.have looked
为何选 a,b 错在哪
It was so dark outside that he_.
a.didn't dare to go out to fetch water
b.dare not to fetch water
为何选 a
从语法角度来讲这几个选项都没有错,只是语义不同,要根据上下文意思来理解.
1.for a last year 意思是已经在美国一整年了,强调这一整年都在,last 表示一个持续的概念.since last year 意思是自从去年就在美国了,强调从去年开始的,last 表示过去的概念.
2.have been looking 意思是从过去到现在一直在找,动作没有停止过.have looked 意思是过去找过,但后来停止了,没有再找了.
3.didn't dare to go out to fetch water 这里的dare是用做实意动词,强调敢不敢.dare not to fetch water 这里的dare是用做助动词,没有突出dare的意味.
1.for a last year 意思是已经在美国一整年了,强调这一整年都在,last 表示一个持续的概念.since last year 意思是自从去年就在美国了,强调从去年开始的,last 表示过去的概念.
2.have been looking 意思是从过去到现在一直在找,动作没有停止过.have looked 意思是过去找过,但后来停止了,没有再找了.
3.didn't dare to go out to fetch water 这里的dare是用做实意动词,强调敢不敢.dare not to fetch water 这里的dare是用做助动词,没有突出dare的意味.
The family has been in American_.
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