14． 若陈述部分是被动语态形式且带有动词定式做主语补足语时.其疑问部分中动词形式必须根据句意用不同的时态.分述如下: ① 若有表过去的时间状语或者谓语动词是过去是时态.疑问部分助动词did构成.例如: He is said to have finished the research work last year. didn't he? ②若谓语是一般现在时或主语补足语含有be动词时.则疑问部分用be的适当形式.例如: She is said to be running a big company. isn't she? ③若谓语是一般现在时且主语补足语是完成式时.则疑问部分用have的适当形式.例如: They are said to have read that book. haven't they? 【
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