1. In a review of 2,000 studies of human behavior that date back to the 1940s, two Swisspsychologists, declaring that since most of the studies had failed to control for such variables as social class and family size,none could be taken seriously.
(A) psychologists, declaring that since most of the studies had failed to control for such variables as social class and family size,
(B) psychologists, declaring that most of the studies failed in not controlling for such variables like social class and family size, and
(C) psychologists declared that since most of the studies, having failed to control for such variables as social class and family size,
(D) psychologists declared that since most of the studies fail in controlling for such variables like social class and family size,
(E) psychologists declared that since most of the studies had failed to control for variables such as social class and family size, 解释中有说到:English has a rule of sequence of tenses: once a verb form is marked for past tense, the following verb forms that describe the same object or event have to be in the past tense as well.
不是很明白,求牛牛给点解释,原OG12没碰到这个语法点。希望牛牛给点例子。 另外fail的用法,查了longman,没说。网上又去搜,他们的解释很让人糊涂,希望牛牛给点解释。
English has a rule of sequence of tenses: once a verb form is marked for past tense, the following verb forms that describe the same object or event have to be in the past tense as well.
不是很明白,求牛牛给点解释,原OG12没碰到这个语法点。希望牛牛给点例子。 另外fail的用法,查了longman,没说。网上又去搜,他们的解释很让人糊涂,希望牛牛给点解释。
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