Translated examples
私も学生です。
I am a student too.
水も飲みます。
I drink water too.
犬もいます。
There is a dog too.
この本も読みます。
I will read this book too.
Meaning
も means also or too. It shows that the noun before も is included in the same idea as something already mentioned or understood.
Formation
Put も after a noun. In many beginner sentences, も replaces は, が, or を rather than being added after them.
Usage
Use も when another person or thing has the same quality or does the same action. It is common in simple self-introductions, answers, and daily conversation.
Nuance
も adds information by linking it to something else. 私も学生です means that someone else is a student, and I am a student too. The earlier item may be directly stated or simply understood from context.
Comparison
は sets a topic, while も adds an item to the same statement. を marks an object, but も can replace it when the object is also included, as in この本も読みます.
Common Mistakes
A common mistake is stacking particles in beginner sentences, such as 私はも or 水をも. Usually, use 私も and 水も instead. Another mistake is using も when there is no shared idea, which can make the sentence feel incomplete.
Related Grammar
Wa vs Ga: Topic, Subject, Contrast, and Practice
Use context to choose between は and が. は establishes what you are talking about or sets up a contrast. が can identify the person or thing that supplies the answer. Translating both as the English subject hides this difference.
The Japanese Particle を: Objects, Contrasts, and Practice
を often marks what an action acts on: 本を読みます and 水を飲みます. It also marks routes and places left behind with some movement verbs, so translating every を phrase as a direct object is too narrow.
の
の (no) connects nouns. It is used for possession, belonging, origin, category, and simple noun descriptions.