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留学群英语考试栏目为您带来“公共英语一级写作中系动词怎么用”,希望对大家有所帮助。更多英语考试相关资讯请关注我们网站!
系动词
系动词亦称联系动词(Link Verb),作为系动词,它本身有词义,但不能单独用作谓语,后边必须跟表语(亦称补语),构成系表结构说明主语的状况、性质、特征等情况。
说明
有些系动词又是实义动词,该动词表达实义时,有词义,可单独作谓语,例如:
He fell ill yesterday.
他昨天病了。(fell是系动词,后跟补足语,说明主语情况。)
He fell off the ladder.
他从梯子上摔下来。fell是实义动词,单独作谓语。
状态系动词
用来表示主语状态,只有be一词,例如:
He is a teacher.
他是一名教师。(is与补足语一起说明主语的身份。)
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留学群英语考试栏目为您带来“公共英语一级写作语法:worth的用法解析”,希望对大家有所帮助。更多英语考试相关资讯请关注我们网站!
worth 的用法
worth,worthy,worth-while都为adj. 意为"值得".
1. worth:be worth + n. 当名词为金钱时,表示"…… 值得……"
be worth doing sth. "……某事值得被做"
The question is not worth discussing again and again.
2. worthy:be worthy of +n. 当名词为抽象名词时表示"……值得……"
be worthy to be done "某事值得被做"
The question is not worthy to be discussed againand again.
3. worth-while:be worth-while to do sth "值得做某事"
worth while:It is worth while doing sth
It is worth while sb to do sth.
典型例题
It is not ____ to discuss the question again and again.
A.worth B.worthy C.worth-while D.worth while
答案C. 由worth的用法可知,此句只适合词组be worth-while to do sth..因此选C.
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