Give the students some papers which written with two kinds of invitations , formal and informal. Let the students act together, then ask them what they notice from that act. They will notice the difference between the formal and informal invitations and replies.

Now, in the first task , they will listen to a track contains four conversations. These conversations of Rose speaking to four friends, they should find which friend that Rose doesn't know very well. Monitor them to look for mistakes, then take feedback from that.

Now, according to the last task, ask the students to read the highlighted useful phrases well. Then ask them to find the answers of questions (a-e). Now, they will listen to a track to check answers and repeat these useful phrases.

After the students repeated these useful phrases , give them more information about the topic ,the difference between the formal and informal replies , agreements and disagreements for invitations. Let the students give more examples to clarify their pronunciation.

Now , give them the next task , exercise no.3. Let them practice the conversations according to ex.1. Let them practice these conversations in pairs. Monitor them to look for mistakes.

Finally , let the students write a conversation based on this situation : Student A: you want to meet up with student B and go somewhere. Make at least three suggestions. Student B: you don't want to go anywhere with student A. Make excuses. Let them work in pairs and take turns.