The repeat after me from 8 line dialogues is what we used in Korea too for the older students.
According to learning theory, it is called
Phonemic Recoding, the process whereby the learner internally connects sounding out the phonemes with the grammatical meaning of the words, so relax guys, a whole lot is happening in this context.

Remember when you learned to read? You were reading out aloud simple gramatical sentences with meaning.
These sentences are usually conversations in the esl context. This is the most meaningful context to them. These students have a myrarid of bilingual texts they can study at home if they desire. If they aren't making much progress don't blame yourselves.
They are getting what they need from you, and they should be reviewing the material in their spare time.
Relax, etc.

Love from Beatrix