Complex sentence: He studied at Manchester Grammar School, then at Trinity College, Cambridge from 1931--38, when, as a junior fellow, he went to India to teach at a Sikh school and at Aitchison College in Lahore.
Split into simpler sentences: He studied at Manchester Grammar School, then at Trinity College, Cambridge from 1931--38. In 1938, as a junior fellow, he went to India to teach at a Sikh school and at Aitchison College in Lahore.