作业帮英语SAT语法题(Identifying Sentence Errors)题目是这样：Air pollution caused by industrial fumes has been studied for years, but only recently has the harmful effects of noise pollution became known.我的英语老师说是has用错了.应
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英语SAT语法题(Identifying Sentence Errors)题目是这样：Air pollution caused by industrial fumes has been studied for years, but only recently has the harmful effects of noise pollution became known.我的英语老师说是has用错了.应
英语SAT语法题(Identifying Sentence Errors)
题目是这样：Air pollution caused by industrial fumes has been studied for years, but only recently has the harmful effects of noise pollution became known.我的英语老师说是has用错了.应该用have.结果就下课了.这里是不是倒装问题?还请高手指教下.
英语SAT语法题(Identifying Sentence Errors)题目是这样：Air pollution caused by industrial fumes has been studied for years, but only recently has the harmful effects of noise pollution became known.我的英语老师说是has用错了.应
是的,错在后半句,给你回归正常语序：The harmful effects of noise pollution have became known. 主语是effects所以后面用have.
满意请采纳~
英语SAT语法题(Identifying Sentence Errors)题目是这样：Air pollution caused by industrial fumes has been studied for years, but only recently has the harmful effects of noise pollution became known.我的英语老师说是has用错了.应
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