1 句子结构及成分1. 及物动词和不及物动词实义动词后面跟宾语时，这个动词是及物动词。实义动词后面不跟宾语时，此时这个动词是不及物动词。The door opened. He opened the door. The meeting began at six. < vi.>We began the meeting at six. < vt.>指出下列句中斜体动词是及物动词还是不及物动词，及物动词填vt.，不及物填vi.。考点 1.Most birds can fly.（）考点 2.The children are flying kites in the park. ( ) 考点 3.It happened yesterday.（）考点 4.My watch stopped.（）考点 5.The baby stopped crying when he saw his mother. ( ) 考点 6.She spoke at the meeting this morning. （）考点 7.Shall I begin at once?（）考点 8.She began working as a teacher after she left school.（）（）考点 9.When did they leave Beijing?（）考点 10. They left last week. （）2. 实义动词、助动词与情态动词实义动词和助动词是根据动词在句子中的含义和作用来划分的。实义动词也叫行为动词。实义动词指的是那些意义完全且能够独立作谓语的动词。如：He lives quite near. (live“住”，有明确的意义，单独作谓语，为实义动词。) I like reading. （like “喜欢 ”，意思明确，单独作谓语，为实义动词。）I bought a pen yesterday. （bought “买 ”，意义明确，单独作谓语，为实义动词。）助动词助动词的 “助 ”是“帮助 ”之意。因此，助动词是指那些用来帮助构成时态、语态、虚拟语气、疑问句、否定句、倒装句和帮助强调的词。这些词本身无词汇意义或意义不完全，不能单独作谓语。帮助构成时态的：The boy is crying.He has arrived. I have been painting all day. Does he like English? 2 He doesn’ t have lunch at home. Trees are planted in spring. The house has been pulled down. If he had come yesterday, I wouldn’ t have made such a mistake. So did he love his mother that he bought her many presents on her birthday. 帮助构成强调意义的He did come yesterday. (他昨天确实来过。did 起强调作用，没有具体意义，是助动词。) 因此可以看出，常见的助动词为do, be, have，它们为基本助动词。一个词既可以作...
