文(ぶん)章(しょう) bunshouは wa大(おお)文(も)字(じ) oomojiで de書(か)き() kaki始(はじ)め() hajimeなくてはならない nakutehanaranai。 Sentences must begin with a capital letter. Literal Sentences [topic-は] capital-letter [means-で] write-begin must. 書き始める is a compound verb: 書く (write) + 始める (begin) — 'to begin writing.' ~なくてはならない is a variant of ~なければならない, both meaning 'must.' This sentence is about writing conventions, not Japanese-specific grammar. language and speech~始める (begin to)~なければならない (must)
文(ぶん)章(しょう) bunshouは wa大(おお)文(も)字(じ) oomojiで de書(か)き() kaki始(はじ)め() hajimeなくてはならない nakutehanaranai。 Sentences must begin with a capital letter. Literal Sentences [topic-は] capital-letter [means-で] write-begin must. 書き始める is a compound verb: 書く (write) + 始める (begin) — 'to begin writing.' ~なくてはならない is a variant of ~なければならない, both meaning 'must.' This sentence is about writing conventions, not Japanese-specific grammar. language and speech~始める (begin to)~なければならない (must)