Try to add some english songs and ask students to sing it together. Everyone love music, love to listening either singing a song. To make english more interesting, the first-best way is to ask students to sing an english song with you. You can tell them the lyrics so they would know some new english words and tell them how to spell all the words in the lyrics. Then ask them to sing the song. Besides they would enjoy the music, it will be also easier to make them understand how to speak english with a good pronounciation and they will be faster to memorize some english words in the lyrics. So it can increase their vocabulary.
When students are getting bored but we still have lessons that hasn’t explained, don’t be worry. Students will not be last long paying attention to the teacher when the teacher is explaining the lesson, therefore we have to do something to take their attention back. They need something spontaneous. In the middle of our explanation, we can play games. This kind of way will attract their attention.We can adapt Hangman or Jeopardy. Another great idea is to have the students themselves create a game that fits the text you are studying. They probably having fun and enjoy the class.
The third thing that we can do is to tell more jokes in class.