CBSE and ICSE primary curricula introduce grammar concepts in a fairly predictable sequence by grade. Here's what's typically expected by Grades 1-5, so you can support without second-guessing whether your child is on track.
Grammar homework often arrives home with unfamiliar terms — "helping verbs," "conjunctions," "adjectives of degree" — and it's easy to feel unsure whether your child is behind, on track, or ahead. Having a rough map of what's typically covered by grade removes a lot of that uncertainty.
Point out grammar naturally during reading time rather than as a separate lesson — "did you notice that sentence used 'was' because it already happened?" Read a wide variety of material, since exposure to correctly-structured sentences does more long-term grammar work than any worksheet. Avoid over-correcting spoken grammar in casual conversation, which can make a child self-conscious about speaking at all.
If grammar concepts from two grades ago are still consistently causing confusion despite regular reading and practice, a focused reading habit or occasional tuition support (common and completely normal in Indian households) can help close the gap without needing to feel like a red flag.
Ultimately, grammar rules exist to support clear communication — the goal isn't a child who can recite the definition of a conjunction, but one who can write and speak clearly and confidently. Building genuine reading habits alongside structured grammar teaching tends to produce far more lasting results than grammar drilling alone.