Translate, fix and master Korean grammar

You learn grammar by building sentences

You read a grammar explanation and think you understand it, but when it is time to speak, the sentence will not come. That is common when learning Korean. SUDA’s grammar training centers on translation: turning a Japanese sentence into Korean yourself.

To build a sentence, you have to choose the words, word order, particles and endings yourself. Because each choice is checked and explained, grammar sticks as something you can use, not just something you have read. Translation practice also builds the skills you need to speak in AI conversation.

Four levels and 80 lessons

Level	Example lessons
Introductory (20 lessons)	Basic greetings, self-introduction, thanks, apologies and getting attention, at a restaurant, shopping, directions and transport
Beginner (20 lessons)	Talking about your plans, planning a weekend trip, food and cooking, memories of a trip, making plans with friends
Intermediate (20 lessons)	Weekend plans with friends, small talk at work, getting ready for a trip, getting involved in your community
Advanced (20 lessons)	Negotiating at international conferences, research reports and data analysis, environmental policy and sustainability, AI ethics and data governance

There are 631 questions in total. The introductory level starts with set phrases, and higher levels move on to sentences with reasons and conditions, and topics from work and society.

Three-step hints, so you never hit a dead end

When you cannot think of the answer, open hints one at a time.

1. Words: the words used in the sentence and their meanings
2. Sentence pattern: the word order and grammar points to use
3. Opening: the first part of the answer

The fewer hints you need, the more of the sentence you built yourself. If you miss the same question twice in a row, the app suggests the next hint.

AI checks and explanations

When you answer, AI checks whether it is correct. If it is not, you see what is different and a corrected sentence, with an explanation in Japanese.

Explanations include a word-by-word breakdown with readings, and other ways to say the same thing. You can listen to the model answer to check the pronunciation too.

Each question shows whether to answer in haeyo, hamnida or banmal style, so you practice levels of politeness as well.

Repeat only what you got wrong

You can retry a missed question right away. At the end of each lesson, there is one more round with just the questions you missed or skipped.

The results screen shows your accuracy and which kinds of mistakes you made most. Missed questions come back for review later, and you can tackle them across lessons from “Review weak points” on the home screen.

Combine with conversation and audio

Sentences you can build in grammar training stick better when you use them in AI conversation. To learn by ear, try audio training, where you listen to phrases and say them out loud.