てよかった means glad that. It is a JLPT N4 Japanese grammar pattern used to express this idea in natural Japanese.
This English meaning is written independently from the source list so it answers the learner question directly: what does てよかった mean and when should you use it?
What does てよかった mean?
Use てよかった when you want to express glad that in a Japanese sentence.
Natural translations include:
- glad that
- to express “glad that” naturally
- the closest natural English meaning in context
How to form てよかった
Verb て-form + よかった
Examples of the pattern:
- Verb て-form + よかった
- てよかった
- related form: ばよかった
When is てよかった used?
Use てよかった in situations like:
- reading or writing JLPT N4-level sentences
- making a sentence more precise than a basic N5 pattern
- recognizing natural grammar in conversation or short passages
Tone and register:
- usually neutral unless the pattern itself is casual, humble, honorific, or written
- common in JLPT N4 grammar study and everyday examples
てよかった example sentences
- 日本語を勉強してよかったです。 — I am glad I studied Japanese.
- 早く来てよかったです。 — I am glad I came early.
- 先生に聞いてよかったです。 — I am glad I asked the teacher.
- この本を買ってよかったです。 — I am glad I bought this book.
- あきらめなくてよかったです。 — I am glad I did not give up.
Nuance of てよかった
The key nuance is glad that in context, not a word-for-word English replacement.
This matters because てよかった often changes the relationship between actions, people, time, or evidence in the sentence. Read the whole sentence before choosing the English translation.
てよかった vs ばよかった
Both patterns can appear in related sentences, but they do different jobs.
てよかった:
- is the target JLPT N4 pattern in this lesson
- focuses on glad that
ばよかった:
- is useful for comparison because learners often confuse nearby forms
- may change the tone, evidence, direction, or relationship in the sentence
Quick contrast examples:
- Target pattern: 日本語を勉強してよかったです。 — I am glad I studied Japanese.
- Related pattern with ばよかった: compare what changes in evidence, timing, direction, or politeness.
Common mistakes with てよかった
Watch out for these mistakes:
- Copying a dictionary gloss without checking the sentence context
- Using the wrong verb, adjective, or noun form
- Confusing てよかった with ばよかった because the English can sound similar
Is てよかった on the JLPT?
Yes. てよかった is connected to JLPT N4 grammar in this blog.
That means learners should be able to:
- recognize it in reading
- understand its nuance in context
- use it in simple original sentences
Practice questions for てよかった
Try making your own sentences with these prompts:
- Write one short sentence using the basic structure.
- Replace the subject, time, or object and keep the same grammar point.
- Compare your sentence with the related pattern above.
Learn てよかった with Kanjiru
If you want to review てよかった together with kanji, vocabulary, and other JLPT N4 patterns, Kanjiru helps you practice Japanese in short, focused sessions.
Browse more lessons here: