[预测题]　It is difficult for us to learn a lesson in life ________ we've actually had that lesson. A. until

　　B. after C. since

　　D. when 答案与解析：A　句意：在亲身经历之前，我们很难去吸取生活中的教训。until直到……为止；after在……之后；since自从……时开始；when在……时候，根据句意选A项。 3. Having scared the little beings, I began struggling to get loose and managed to break the strings that tied my left arm and slightly moved the strings that tied down my hair.吓唬了那些小人后，我开始挣扎松开并设法摆脱了绑在左胳膊上的绳子并顺利地脱离了绑在头发上的绳子。 having scared...为现在分词短语作状语，现在分词的逻辑主语就是句子的主语，且和主语之间构成主动关系。 分词所表示的动作完成之后，谓语动词所表示的动作才发生，用现在分词的完成形式作状语。 Walking in the fields on a March afternoon, he could feel the warmth of spring. 走在三月下午的田野里，他可以感觉到春天的温暖。 Having waited in the queue for half an hour, the old man suddenly realized he had left the cheque in the car. 这位老人排队等候一小时后，突然意识到他把支票丢在小汽车里。 随 堂 检 测

　　Ⅰ.单词拼写 1．There was a d________ of two hours before the plane took off. 2．I didn't mean to eat anything, but those apples looked so good I couldn't r________ trying one. 3．I could hear my wife s________ Niuniu, our dog, for bring mud into the house. 4．The secretary is very careful and never o________ any little points.

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