There is a large gap between those who make progress in languages and those who do not.  There is a gulf between people who do make progress in languages and those who do not. Those able in languages struggle to deconstruct the difficult concepts and explain them to learners who cannot understand. Teachers cannot empathise with students who struggle. Expecting students who have great difficulty in learning languages to be able to do so from those who cannot even explain linguistic concepts successfully is far too much to ask. This one reason why in the UK Ofsted (Office for Standards in Education) considers language teaching in secondary schools to be weak. [1]  There are similar problems with grammar between those who are bilingual and those who are not. People who are bilingual due to their background do not think in grammar. If they do not know why certain grammatical constructions are used when and why, how is an absolute beginner struggling with languages supposed to understand such grammar rules? [2]  [1] Webb, Lauren, ‘Ofsted reports poor language teaching in UK’, Veritas,   [2] Reynolds, ‘Bilingualism, Multiculturalism and Second Language Learning’, 1990, p.164