Here are a few phrases you can use to interrupt when you have something to add to a conversation or when you approach a stranger to ask for something.
Once someone has interrupted you, you need to get back to the topic at hand. Here are a few examples:
Listen to the podcast and repeat after the speaker. Concentrate on articulating at first. Then, listen for the natural pauses in the sentence and repeat.[audio http://audioboo.fm/boos/1170692-english-phraseology-interrupting-a2.mp3]
Use these sentences in role-plays with your classmates or your teacher. Set the scene, plan a short dialogue & use the expressions in context.