[JLPT grammar] Why can’t we use しよう and つもり together?

Today I am going to share the homework correction quoted from my JLPT course!
The student’s sentence is not correct. Can you find the mistake?


[Student’s sentence]





[My correction]

I plan to start studying Chinese next year

しよう is the volitional-form of する and is connected to と思う, meaning “I am thinking to do, I will do”. つもり also means “to intend to do, to plan to do” and using it together with a verb volitional-form would be redundant. So use a verb dictionary-form with つもり.


While both express similar meanings, 〜ようと思う implies a more spontaneous intention, while つもり suggests a more concrete plan.

(I’ll definitely start studying Chinese next year!)


(I think I’ll start studying Chinese next year…)



I hope my explanation helps you. 😊


The above correction is just a taste of what my JLPT all-in-one course has to offer (today’s is from the N4).

Our course provides detailed Japanese grammar explanations and personalized feedback on your homework submissions to help you master the language. With homework assignments included in each lesson, you’ll have ample opportunities to practice and improve your skills. Enroll now to receive easy-to-understand support and start your journey towards fluency.



Need Support From a Professional Teacher?

The JLPT All-In-One course consists of 180 exclusive modules for each level. The levels are, N5, N4, N3, N2, N1 (N2 consists of 240 modules). You can prepare for the JLPT exam for 10 minutes a day as all JLPT subjects are broken down into daily lessons to maximize quality and quantity.

You will receive emails regarding what you need to study for the day, as well as words of support and guidance in the emails.

Submissions of your completed homework are from your PC, laptop, tablet, or smartphone. Chika Sensei will give you personalized feedback, emboldening your knowledge of the language.

>>Click here to tour the course!