以下是查字典英语小编为大家准备的:介词about,希望同学们好好学习并记忆它。
about重要用法完全归纳
用法一
表示“大约,通常用于数字前。如:
It costs about $10. 这需10美元左右。
He arrived at about 10 o’clock. 他大约10点钟到达。
用法二
在动词 know, hear, speak 等之后用不用介词 about,含义有差别。如:
I have heard about him, but I don’t know him. 我听到过一些关于他的事,但不认识他这个人。
I’ve heard of him, but I don’t know about him. 我听说过他,但我不知道有关他的情况。
试比较:
He knows her. 他认识她。
He knows of her. 他知道有她这样一个人。
He knows about her. 他知道有关她的情况。
用法三
be about to (do),意为“即将、“马上。注意该短语不与具体的时间状语(如:soon, tomorrow, immediately 等)连用。如:
We are about to leave for Beijing. 我们正要动身去北京。
不说:He is about to leave here tomorrow.
注意该短语可与并列连词 when(这时)连用。如:
I was (just) about to go to bed when the telephone rang. 我正要上床睡觉,这时电话铃突然响了起来。
在美国英语中,be about to do sth 的否定式,可表示“不愿意做某事。如:
I am not about to admit defeat. 我还不想认输。
用法四
about和on均可表示“关于,但about主要指泛泛地或非正式地谈论某事,其谈论的内容也较为普通;而on则指比较有系统地或理论性较强地论述某事,其论述的内容较正式或较严肃。比较:
He wrote on mathematics. 他撰写数学著作。
He wrote about the school. 他报道有关这所学校的情况。
It is a book on birds. 那是一本论及鸟类的书。(可能是一本学术著作)
It is a book about birds. 那是一本关于鸟的书。(可能是一本供小孩看的关于鸟类的故事书)
用法五
注意不要按汉语意思,在一些及物动词后误加介词 about,而在一些不及物动词后该加 about 时却漏加。如:
他没什么不满吧?
误:He has nothing to complain, does he?
正:He has nothing to complain about, does he?
析:表示抱怨某事时,complain 不及物,其后需接介词 about 或 of 再带名词或代词作宾语。(本句中 about的逻辑宾语是 nothing)
我们会尽快讨论此事的。
误:We'll discuss about it as soon as possible.
正:We'll discuss it as soon as possible
析:discuss(讨论)为及物动词,后接宾语时,无需用介词。类似地,英语说 consider sth, 而不说 consider about sth;可说 doubt sth, 而不说 doubt about sth;可说 explain sth,而不说 explain about sth;可说 report sth,而不说 report about sth;等等。
介词about由查字典英语网小编整理,仅供参考。
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