Example 3.Modal verbs'情态动词wil,must,need and etc 疑问句的谓语动词和陈述句一致 You'll forgive him,won't you? We must work hard,mustn't we?Example 3. Modal verbs情态动词 will, must, need and etc 疑问句的谓语动词和陈述句一致 • You’ll forgive him, won’t you? • We must work hard, mustn’t we?