【正文】
underground every day. ☆ The work of the underground system includes twelve lines and now goes twentysix miles out of central London. 2. Help the students fill in the blank and explain the meaning of “ permit” () So, why not take a trip on the oldest underground system today? Visit our ticket office and buy one of the travel cards that __________ you to travel all over the underground system. Answer: permit 3. Help the students summarize the usage of “ permit” by analyzing the following two sentences and list some functions of a card of Nanjing Underground by using the word “ permit” .(ppt. 27) ☆ This club does not permit smoking. ☆ The security system will not permit you to enter without the correct password. Answers: + ing form of verb, + object + to infinitive Step 3 Language in use Help the students use the following words to say something about the underground system in Nanjing. () Suggested words: distinction, plex, distant, choke, accelerate, permit, link up