Twenty Mistakes That Mark You as an Intermediate Learner

What the intermediate ceiling sounds like

There is a stage where your Japanese is fully functional and completely recognisable as a learner's. Nothing is broken. The particles are right, the verbs conjugate, the vocabulary is broad enough for work. What gives you away is the shape of the speech: every sentence the same length, every sentence ending the same way, the subject stated when it should be silent, the point arriving after a long explanation, and near silence while the other person talks. Listeners read this as effort rather than error, and they adjust to you instead of correcting you.

The twenty items below are the usual contents of that ceiling. They divide into four kinds. Some are translation habits, where an English structure has been carried across intact. Some are register habits, where you have one setting and cannot move between plain and polite speech. Some are listening habits, where you behave like a reader rather than a conversation partner. And some are single-word defaults that were correct once and never got replaced. None of them will stop you being understood, which is exactly why they last for years.

Read the middle column before the right one. The fix is easy to memorise, but it will not stick unless you can hear what the habit does to the listener. Most of these are not corrections of meaning at all; they are corrections of impression, and impression is what is capping you.

Talking about yourself without saying watashi

Japanese establishes a topic and then leaves it implicit until it changes. When you restate watashi in each sentence, a listener processes it as contrast, as though you were distinguishing yourself from someone else who does otherwise. Over a paragraph of speech that reads as insistent. The same applies to anata, which is not a neutral you at all: toward an adult you know it can sound cold, and toward a superior it is simply wrong. Use the person's name with -san, or restructure the question so no pronoun is needed. And watashi wa omou needs no watashi and no wa, because to omoimasu already marks the opinion as yours.

Getting off the desu and masu rails

Polite Japanese is not a flat line of desu and masu. Native speech constantly signals what kind of sentence is coming: n desu for explanation and background, ne for shared feeling, yo for information the listener lacks, deshō for a guess you invite them to confirm. Learners who never picked these up produce grammatically perfect speech that sounds like a written list read out loud. The opposite failure is just as visible: switching into plain form for one sentence because it was easier, then back to masu. That inconsistency is more conspicuous than either register would be on its own.

Keigo that goes one layer too far

At intermediate level keigo mistakes stop being omissions and become over-corrections. The two most common are stacking honorifics on a verb that is already honorific, and pointing a humble verb at the wrong person. Irassharu is already the respectful form of come, go and be, so irassharareru adds a layer that native listeners notice. Mōsu, itadaku and haiken suru lower the speaker, so using them for a customer or a manager reverses the direction of the whole sentence. When you are unsure, plain desu and masu with a correct set phrase is safer than an invented honorific.

Choosing the intransitive verb Japanese prefers

English reaches for an agent even when nobody is responsible: I broke the file, the system dropped my booking. Japanese often prefers the intransitive pair member, which describes the state that resulted and leaves blame out of it. Getting this wrong is the single clearest intermediate marker, because the sentence stays comprehensible while the particle gives you away: an intransitive verb cannot take o. Learn the pairs together, and note that choosing the transitive one is not always wrong, it just means you are claiming the action deliberately.

Connectors instead of translated conjunctions

So, but and because are three English words with three Japanese jobs each, and the intermediate habit is to pick one Japanese word per English word and use it everywhere. Dakara at the start of consecutive sentences sounds like a child listing consequences; node folds the reason into the same sentence. Demo between two complete polite sentences is correct but chops the speech into blocks; ga or kedo joins them and softens the second half. And kara, when you are explaining something that was your fault, lands as a defence of yourself. The te-form or the -mashite form gives the same reason without the argument.

Words that were fine at N5 and are not enough now

Sugoi and totemo were useful because they attached to anything. That is also why they stop working: a speaker who says totemo for every degree and sugoi for every reaction has one dial where a native speaker has ten. The repair is small, because you only need four or five replacements in active use. The mirror-image problem is reaching for a word that exists but belongs to writing. Kōnyū suru, hijō ni and shōkyū suru are correct on the page and conspicuous in a kitchen conversation. Prefer the everyday word in speech and keep the formal one for documents.

Listening out loud: aizuchi and the two meanings of hai

In Japanese the listener works audibly. Short reactions every few seconds tell the speaker the channel is open, and a silent listener is read as bored, confused or displeased rather than as polite. Many intermediate learners produce none, because in their first language listening is silent. The related trap is hai. It does double duty as I am following and as I agree, and a learner who uses it for the first meaning ends up agreeing to plans, prices and deadlines they never accepted. Use ē or sō desu ka while you are simply tracking, and save hai for actual assent. Note also that naruhodo can sound slightly evaluative toward a superior, so keep sō nan desu ka for your manager.

The small leaks: counters, double topics and dropped particles

Three grammar habits survive well past the point where the rest of your grammar is solid. Counters are the first, because there are many and the generic hitotsu, futatsu set works often enough to hide the gap until you count animals, machines, flat objects or people. The second is marking the topic twice in one clause, usually because you started the sentence again halfway through. The third is dropping particles. Casual speech does drop them, and once you have learnt that you may keep dropping them in careful moments where the full form is expected: an explanation to a manager, a request to an office, a first meeting.

Delivery: the point first, and Japanese rhythm

The last two habits are about shape rather than words. Many learners narrate the whole background before the conclusion, because that is how they rehearsed the sentence in their head. In most spoken Japanese exchanges the headline comes first and the explanation follows, often trailing off in a -te or -kute form that invites the listener to fill in the rest. Saying the point first also protects you: if your grammar collapses halfway, the necessary information has already arrived.

Rhythm is the other one. Japanese gives roughly equal length to each mora and does not compress unstressed syllables the way English does, so an English-timed delivery makes long vowels short, swallows small tsu, and turns the ending of every word into a mumble. This is worth drilling separately from vocabulary: take three sentences you already know, tap the beats on the table, and say them at an even pace until nothing is rushed.

A four-week repair plan

• Week one, pronouns and endings: record two minutes daily, count watashi, and rewrite each flat desu sentence with n desu, ne or yo.
• Week two, verbs and connectors: drill ten transitive and intransitive pairs, then retell one story a day using node and kedo instead of dakara and demo.
• Week three, listening: play any Japanese interview, pause every ten seconds, and say an aizuchi aloud; ban hai unless you actually agree.
• Week four, register: run the same three-minute topic twice, once to a friend and once to a manager, and check that no sentence changes level mid-way.
• Every week, pick two overused words and retire them by naming their replacements out loud before you start.
• Keep a single page of your own corrected pairs, learner version on the left, natural version on the right, and read both aloud rather than only the right-hand column.