Grammar: nouns, です forms and adjectives
Describe familiar people and things with polite or plain statements, negatives and past forms.
Exam scope and assessment notes
This is an original mapped starter, not the recommended full course of about 130 guided learning hours. All Japanese examples, translations, grammar explanations, kanji groupings, listening scripts and pronunciation aids require review by a qualified Japanese-language teacher before publication is described as complete. Browser speech is supplemental, not Cambridge audio. Speaking rehearsal and writing feedback are formative and do not reproduce a live examiner or award official marks. The linked vocabulary workbook has not been reconciled word by word.
Before you begin
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
Which approach gives the most reliable Japanese response?
What you will learn
- Use polite and plain forms of です.
- Describe and connect noun and adjective phrases.
Recognise form and time
The syllabus expects forms such as です, ではありません, でした, だった and their negatives. It also expects plain forms in suitable contexts.
い-adjectives and な-adjectives form negatives and past statements differently. Identify the adjective type before changing it.
Connect descriptions
「この町は静かで、小さいです。」 links two descriptions: “This town is quiet and small.” 「青いかばん」 uses an い-adjective before a noun.
All forms and example naturalness require review by a Japanese specialist.
Sources for this lesson
Pause and explain
Why identify whether an adjective is い or な before changing it?
Worked example
Change 「町は静かです」 to a simple plain past statement and explain the tense.
Show the worked solution
- Recognise 静か as a な-adjective.
- Use its plain past form.
- Keep the meaning “was quiet.”
Answer 「町は静かだった。」 means “The town was quiet.” Check style and punctuation for the target context.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
Put 「元気です」 into a polite past form and explain the tense.
Give me a hint
Use the past polite form of です after a な-adjective.
Compare my reasoning
- Identify 元気 as a な-adjective.
- Use でした.
- Translate the changed time.
「元気でした。」 means “was well/energetic.” It changes a current description to a past one.
Look for these in your work
- Chooses the adjective pattern
- Uses polite past
- Explains tense
A text says 「昨日は寒くなかったです。」 What does it state about yesterday?
Give me a hint
Recognise the negative past form of an い-adjective.
Compare my reasoning
- Find 寒い.
- Identify くなかった.
- Keep 昨日 attached to the claim.
It was not cold yesterday. The sentence does not say today's weather.
Look for these in your work
- Recognises negative past
- Reports the correct day
- Avoids adding a current condition
Join “the library is quiet” and “the library is convenient” as one description. Explain how to check the forms.
Give me a hint
Choose a linking form for each adjective type.
Compare my reasoning
- Identify each adjective type.
- Use the correct linking form.
- Check that both meanings remain.
A suitable pattern links the descriptions with で; verify the forms for 静か and 便利 with a qualified source. Intended meaning: “The library is quiet and convenient.”
Look for these in your work
- Links both descriptions
- Checks adjective types
- Preserves meaning
Common mistakes
- Applying an い-adjective ending to a な-adjective
- Mixing polite and plain styles without reason
- Assuming every adjective follows one pattern
What can you explain now?
Why identify whether an adjective is い or な before changing it?
Compare with the explanation
The groups change differently
The ending depends on the adjective pattern.
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Make it stick
Explain one idea from memory, answer the checkpoint, and name a Japanese form or reading that needs checking.
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.