Studying French grammar involves learning about various language components, including pronouns and determiners. Pronouns and determiners are fundamental elements of sentence construction that help in pointing towards specific nouns. Pronouns in French replace nouns to avoid repetition, similar to English. They can be categorized into personal pronouns (je, tu, il), reflexive pronouns (me, te, se), stressed pronouns (moi, toi, lui), relative pronouns (qui, que), and more.

Understanding every type is crucial for proficiency in French language. For instance, exercises might entail replacing repeated nouns with suitable pronouns in a sentence, ensuring correct pronoun-agreement, or identifying reflexive verbs and using suitable reflexive pronouns.

Meanwhile, French determiners precede the noun to determine its gender, number, and form. They include definite articles (le, la, les), indefinite articles (un, une, des), and possessive or demonstrative determiners (mon, ton, ce, cette). An exercise might involve choosing the correct article for a noun or replacing English determiners with French equivalents in sentences.

Doing these exercises can greatly aid in gaining command over the French language. The key is to consistently practice using various exercise formats, such as fill-in-the-blanks, sentence reordering, translation and correction activities, which can effectively instil these linguistic elements.