Lesson 23 — Expressions Using the た-form and て-form

Overview

The た-form and て-form are two of the most productive verb forms in Japanese — each attaches to a wide range of endings to create different meanings. This lesson is a reference guide to the most important patterns built on each form. (For how to build the た-form and て-form, review Lesson 11.)

Part 1: Expressions Using the た-form

た-form ＋ ことがある — “Have done / Have experienced”

Meaning: Expresses that you have experienced something at least once in the past — “I have done…” or “It has happened that…”.

Structure: [Verb た-form] ＋ ことがある／ことがあります

💡 Don’t confuse this with simple past tense. 〜たことがある is about life experience, not a specific past event:

• 日本に行った → I went to Japan. (a specific trip)
• 日本に行ったことがある → I have been to Japan (at some point in my life).

Japanese	English
日本に行ったことがあります。	I have been to Japan.
すしを食べたことがあります。	I have eaten sushi (before).
その映画を見たことがない。	I have never seen that movie.

⚠️ This pattern is for distant or notable experiences, not things you did recently. You would not say 今日の朝ごはんを食べたことがある for “I ate breakfast this morning.”

た-form ＋ ほうがいい — “You should / It’s better to…”

Meaning: Gives advice or a recommendation — “you’d better…” or “it’s better to…”.

Structure: [Verb た-form] ＋ ほうがいい／ほうがいいです

Japanese	English
早く寝たほうがいいです。	You should go to bed early.
薬を飲んだほうがいいよ。	You’d better take some medicine.
病院に行ったほうがいいです。	It’s better to go to the hospital.

💡 Why the た-form for advice about the future? Although the action hasn’t happened yet, Japanese uses the past form here. This is an idiomatic feature of the pattern — the た-form gives the advice a more definite, decisive tone. Using the plain (non-past) form — 行くほうがいい — is also possible but sounds weaker and less direct.

💡 For negative advice (“you shouldn’t”), use the plain negative ない-form:

• タバコを吸わないほうがいい → You shouldn’t smoke.