The grammar in B2.1 moves beyond simple sentence structures to complex syntax. Key topics include:
For independent practice and deepening grammar/vocabulary knowledge. menschen b2 1 kursbuch
Since "Menschen B1.1" is a very popular textbook, I will assume you are likely referring to a story suitable for the (the beginning of the intermediate stage). At this level, learners can understand the main points of clear standard input on familiar matters. The grammar in B2