集中演练 1 1-1.单句语法填空 ① Having analysed (analyse) the data, the scientists concluded that the disease was caused by the polluted water. ②Having been warned (warn)of danger in the street at night, she had to go home, with a friend following her.
③ Having failed (fail) many times, Edison didn't lose heart and finally he invented the light bulb. ④ Having driven (drive)all the way, we felt rather tired and decided to find a hotel to have a rest. ⑤The road is under construction, causing (cause)the delay.
由于还没有完成作业, 这个学生不敢去上学。 Having been invited to speak, I'll start making preparations tomorrow. 已经被邀请发表讲话, 我明天将开始做些准备。
2.动词-ing 形式的一般式和完成式作状语的用法区 别
(1)动词-ing 形式的一般式, 作状语时与句子主语之间 为主动关系, 所表示的动作与句子谓语动作同时或几 乎同时发生, 常表示时间、条件、原因或结果等。
Seeing those pictures, he couldn't help thinking of those days in Yan'an.