大全449
It may be another fifteen years before spacecraft from Earth again venture to Mars, a planet now known to be cold, dry, and probably lifeless.
(A) again venture to Mars, a planet now known to be
(B) venture to Mars again, a planet now known for being
(C) will venture to Mars again, a planet now known as being
(D) venture again to Mars, a planet that is known now to be
(E) will again venture to Mars, a planet known now as being
答案A
大全705
49. The cameras of the Voyager II spacecraft detected six small, previously unseen moons circling Uranus, which doubles to twelve the number of satellites now known as orbiting the distant planet
(A) which doubles to twelve the number of satellites now known as orbiting
(B) doubling to twelve the number of satellites now known to orbit
(C)
which doubles to twelve the number of satellites now known in orbit around
(D) doubling to twelve the number of satellites now
known as orbiting
(E) which doubles to twelve the number of satellites
now known that orbit
答案B
在白勇的书里说
正确用法:know as +n. 或者known to do (但known to be 永远错)
那么上面的大全449为什么是对的呢,还是答案错了,谁有语法书能查到这个known的用法呢?
谢谢。
known as/for/to do sth
Here's how we should use these:
1. Known to do something: Usually, we say "known to do sth" in two different ways. First, when we want to talk about some fact that people have learned. We also use this when we are talking about the habits of someone or someting that other people know about.
Examples:
Smoking cigarettes is known to cause cancer.
Pandas are known to be an endangered species.
Tommy is known to come late to class sometimes.
2.known for: We use "known for" when we want to talk about the reputation of something.
Examples:
The pomo of California were known for their basket making.
New York City is known for its tall buildings and busy lifestyle.
Dolphins are known for their intelligence and playfulness.
3. Known as: We use "known as" when we want to talk about the name of somebody or something or its definition.
Examples;
In some parts of the United States, the lynx is known as a puma.
An irrational fear, one that has no basis in experience, is known as a phobia.
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