Learning objectives
- Lesson goals: "Knowing how X is, I predict Y"—based on familiarity.
- Form and connection: [Nounの/Plain form] ことだから
- Nuance in real use: ことだから represents trust based on familiarity—I know you, so this is my inference.
Form and connection
Core Explanation
"Knowing how X is, I predict Y"—based on familiarity.
Cultural Note
Practical examples
Common pitfalls
Build the base form before adding the pattern
Complete the required conjugation first. Do not keep polite and plain endings at the same time.
Match politeness to the situation
The examples are reliable starting points; relationships and context can still change the most natural wording.
Practice and answers
Show answer
[Nounの/Plain form] ことだからShow answer
Knowing him, it'll be fine.Show answer
田中たなかさんのことだからもう準備じゅんびできているでしょう。 ([Nounの/Plain form] ことだから)Continue learning
Mono Dakara: Because (Explanatory)
Softer explanatory "because"—used for justification. This lesson combines form, context, examples, common mistakes, and practice so you can use the pattern in real communication.
Ni Kagiru: Nothing Beats / Limited To
"Nothing beats X" or "limited to." This lesson combines form, context, examples, common mistakes, and practice so you can use the pattern in real communication.
Complete Guide to Plain Forms: Linking Ideas, Quotations, and Judgments
Learn the plain forms of nouns, adjectives, and verbs and use them to modify nouns, quote speech, express time and reasons, state plans, make judgments, and build indirect questions.