B)Use of verbal substitutes a)在替代主语动词的用法中，动词替代词do所替代 的通常是实义动词；如果被替代的主动词是及物的， 则替代词之后须跟宾语。动词替代词可与情态助动 词连用；在否定句和疑问句中有时还须引进助动词 “do的适当形式为操作词。 例如： She plays the piano better than she does(=plays)the guitar. John speaks French as fluently as he does (speaks) German. The production increases as it has done (increased) for the last few years. ●John has never acted as he should have done(∈ acted). 10 10 B) Use of verbal substitutes a) 在替代主语动词的用法中，动词替代词do所替代 的通常是实义动词；如果被替代的主动词是及物的， 则替代词之后须跟宾语。动词替代词可与情态助动 词连用；在否定句和疑问句中有时还须引进助动词 “do”的适当形式为操作词。 例如： ⚫ She plays the piano better than she does (= plays) the guitar. ⚫ John speaks French as fluently as he does (= speaks) German. ⚫ The production increases as it has done (= increased) for the last few years. ⚫ John has never acted as he should have done (= acted)