2. Help the students fill in the blank and explain the meaning of "permit" (ppt.26)

中华资源库 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)

☆ 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

中华资源库Help the students use the following words to say something about the underground system in Nanjing. (ppt.28)

Suggested words:

distinction, complex, distant, choke, accelerate, permit, link up