〜をします

## What it means Some words describe an activity but aren't verbs by themselves — like テニス (tennis) or 勉強 (study). Adding **を + します** turns that activity word into something you can actually do: "do tennis" becomes "play tennis".

## When to use it The pattern is **Activity noun + を + します**. します is the "do" verb and it conjugates just like any other verb: します (do), しません (don't do), しました (did), しましょうか (shall we do?). Many everyday activities follow this pattern: 勉強をします (study), 仕事をします (work), 料理をします (cook), スポーツをします (play sports).

## Don't confuse it with Don't add を after words that are already verbs on their own, like 食べます or 行きます — those don't need します. The を + します pattern is only for noun-like activity words that need a "doing" verb attached. A common beginner mistake is dropping します entirely and just saying the noun, which sounds incomplete in Japanese.