当to do作主语:一般用it作形式主语,不定式后置,具体的句型为It's adj/noun(for sb)to do。当to do作宾语:1.谓语动词+动词不定式(多数动词属于此类动词);2.系表结构+动词不定式。 ![]() 当to do不定式作宾语补足语 1、具体结构为:主语+谓语+宾语+动词不定式 例如:The teacher urged his students to prepare for the exam. 老师劝他的学生准备考试。 Their help enabled me to finish the work with ease. 他们帮助我,使我能够顺利地完成工作。 2、当动词不定式做make, have, let, hear, see, feel等动词宾语的补足语,要省略“to” 例如:My father will probably have Tom paint the house green. 我爸爸很可能叫汤姆把房子漆成绿色。 I felt my heart beat violently. 我感觉到自己的心跳得很厉害。 当to do不定式作目的状语 1、具体结构为:in order/so as + 动词不定式 例如:He must work very hard in order to support his large family. 他必须拼命工作以养活他的大家庭。 Listen carefully so as to follow the teacher. 要仔细听才能听懂老师讲的课。 2、具体结构为:be used + 动词不定式 例如:The book is used as a reference book. 这本书被用来做参考书。 (责任编辑:admin) |