doesn't he?
陈述部分--是think/believe/suppose (表示“认为；猜测”类动词)引导的复合句(即宾语从句)时,疑问部分：
○1当主句的主语是第一人称时,则和从句保持一致.如 I believe Miss Wang is right,isn’t she?/ We don’t think you can answer so difficult a question,can you?
○2当主句的主语不是第一人称时,则和主句保持一致.如 He thinks he can mend this bike,doesn’ t he?
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