题目内容
19.-Keep working hard,Paul.You will surely realize your dream of being a writer you give it up halfway.-I will,thank you,Miss Rowling.( )
| A. | unless | B. | if | C. | since | D. | though |
分析 ---坚持努力,保罗.只要你不半途而废你就能实现成为作家的梦想.
---我会的,谢谢,Miss Rowling.
解答 答案:A.结合You will surely realize your dream of being a writer you give it up halfway.可知这里是表达如要不半途而废,用unless引导的条件状语从句,意为"除非",相当于if not,遵循主将从现的规则,if如果,since既然,though虽然,故答案是A.
点评 unless是从属连词,引导条件状语从句,含有否定意义,相当于if条件状语从句的否定形式.所以unless=if not.注意:unless引导的条件状语从句和if条件状语从句,与其它时间状语从句一样,用一般现在时代替将来时.
1.Unless you take more care,you'll have an accident.
(如果不多加小心的话,你会出事故的.)
2.My baby sister never cries unless she is hungry.
(我那刚出生的妹妹除非饿了,否则她是从来不哭的.)
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