Reibun
、、（.）、（!）、（?）、。

When writing a sentence, you normally start with a capital letter and end with a period (.), exclamation mark (!), or question mark (?).

Literal

Sentence [object-を] writing time [topic-には], usually capital-letter [with-で] starting, period (.) or exclamation-mark (!) question-mark (?) [with-で] end.

A metalinguistic sentence about English writing conventions, written in Japanese. ふつう ('usually') is the everyday form of 普通. 大文字 ('capital letter') vs 小文字 ('lowercase'). The parenthetical punctuation marks serve as inline examples. The sentence is likely from an English textbook for Japanese learners — a genre inversion where the Japanese sentence teaches English rules.