てもいいです

てもいいです means it is OK to; may I. It is a JLPT N5 Japanese grammar pattern used to give or ask permission.

This grammar point appears often in beginner conversations, classroom Japanese, and JLPT-style questions. If you want to give or ask permission, てもいいです is a useful pattern to learn because it helps you build natural basic sentences.

What does てもいいです mean?

Use てもいいです when you want to give or ask permission.

Natural translations include:

• it is OK to
• may I
• it is okay to; may I

The exact English translation changes with context. Focus on the role of the grammar point in the sentence first, then choose the English phrase that sounds natural.

How to form てもいいです

Verb て-form + もいいです

Examples of the pattern:

• 行ってもいいです
• 食べてもいいです
• 使ってもいいです

Pay attention to the word form before and after the pattern. Many beginner mistakes happen because the meaning is understood, but the grammar is attached to the wrong form.

When is てもいいです used?

Use てもいいです in situations like:

• asking permission
• giving permission
• checking if something is allowed

Tone and register:

• polite and common
• Common in daily speech, textbook examples, and beginner JLPT questions

てもいいです example sentences

• ここに座ってもいいですか。 — May I sit here?
• このペンを使ってもいいです。 — You may use this pen.
• 写真を撮ってもいいですか。 — May I take a picture?
• もう帰ってもいいです。 — You may go home now.
• 水を飲んでもいいですか。 — May I drink water?

Read the Japanese sentence first, then check the English translation. Try to notice what the grammar point contributes: question, contrast, reason, time limit, suggestion, negation, comparison, or obligation.

Nuance of てもいいです

The key nuance is the action is allowed or acceptable.

This matters because beginner Japanese often uses small words and endings to show meaning that English expresses with word order or helper verbs. For てもいいです, the sentence can change a lot depending on placement and context.

For example:

• In conversation, it helps the listener understand the action is allowed or acceptable.
• Compared with なくてもいい, it has a different job even when the English translation looks close.

てもいいです vs なくてもいい

Both てもいいです and なくてもいい can express related ideas, but they are different.

てもいいです:

• says doing the action is okay
• often asks or gives permission

なくてもいい:

• says not doing the action is okay
• removes necessity

Quick contrast examples:

• ここに座ってもいいですか。— May I sit here?
• 立たなくてもいいです。— You do not have to stand.

If you are unsure which one to use, ask what the sentence is trying to do: ask a question, connect ideas, show a reason, mark time, make an invitation, compare two things, or express obligation.

Common mistakes with てもいいです

Watch out for these mistakes:

• Confusing permission with lack of obligation
• Forgetting か when asking a permission question
• Using dictionary form before もいい

A good study habit is to write one short sentence and then change only the grammar point. This makes the difference between similar patterns easier to feel.

Is てもいいです on the JLPT?

Yes. てもいいです is commonly taught as JLPT N5 grammar.

That means learners should be able to:

• recognize it in reading
• understand its nuance in context
• use it in simple original sentences

For test preparation, do not only memorize the English gloss. Practice identifying the words around the grammar point, because JLPT questions often test structure and context together.

Practice questions for てもいいです

Try making your own sentences with these prompts:

• Ask if you may sit here.
• Give permission to use a pen.
• Ask if you may take a picture.

Keep the sentences short at first. Once the form feels natural, add time words, places, reasons, or contrast to make the sentence more realistic.

Learning path for てもいいです

Use てもいいです as part of your JLPT N5 request, permission, prohibition, and obligation grammar toolkit. Check the social force of the sentence: request, invitation, permission, prohibition, advice, or necessity. Then practice changing the ending to make the sentence softer, stronger, positive, or negative.

A good review order is: first make one short sentence with てもいいです, then compare it with なくてもいい, and finally add てはいけない or てください to see how the basic meaning changes.

For practice, keep the sentence short: write one example with てもいいです, one example with a different subject or time word, and one example that contrasts it with a related pattern below.

Related grammar to review next

• なくてもいい — contrasts request, permission, prohibition, advice, and obligation strength.
• てはいけない — contrasts request, permission, prohibition, advice, and obligation strength.
• てください — contrasts request, permission, prohibition, advice, and obligation strength.
• ましょうか — contrasts with this pattern from the desire, invitation, plan, and intention grammar group.

Learn てもいいです with Hane

If you want to review てもいいです together with the related patterns above, Hane helps you practice Japanese in short, focused sessions.

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