Used for a sudden change or contrasting event that happens almost immediately after another. It is used for third-party actions or natural phenomena, not the speaker's own actions.
Common mistakes
Using it for the speaker's own intentional actions
Indicates that immediately after an action occurs, another action follows. Usually, the subject remains the same, and the second action is often unexpected or sudden.
Common mistakes
Using with the past tense (it must be dictionary form)
Confusing with 'nari... nari' (A or B)
Confusing with 'totan ni' (which can have different subjects)
Used for special, one-time, or ceremonial events. 'Ni saishite' is more formal and can include negative/unavoidable events, while 'ni atatte' usually implies a positive, active preparation.
Common mistakes
Using 'ni atatte' for negative events like funerals or accidents
Confusing it with 'ni shite wa' which means 'for a...'
Using past tense before the pattern (must be dictionary form or noun)
Used in formal or business contexts to mean 'as soon as event A finishes, I will do B'. B is a volitional action. This is only used for future events, not past ones.
Common mistakes
Using it for past events (use 'ta totan' instead)
Using it for natural phenomena (e.g., 'As soon as it rains...')
Using the dictionary form instead of the masu-stem
Indicates that when someone did something, a certain result followed or something was discovered. It focuses on the discovery or outcome of the first action.
Indicates that B happened immediately after A. Often implies surprise or an unexpected change. The second clause cannot express the speaker's will, request, or intention.
Common mistakes
Using a volitional verb in the second clause (e.g., 'As soon as I got home, I will sleep')
Using dictionary form instead of past tense (ta-form) before 'totan'
Confusing it with 'shidai', which is used for future plans
Two meanings: (1) Do something while the current state lasts, before it changes. (2) While doing something, a change happened naturally without the speaker noticing.
Common mistakes
Confusing with 'aida ni', which just means 'during' without the 'before it changes' nuance
Using specific time durations like '3 hours' (cannot use '3 jikan no uchi ni')
Using the wrong noun-adjective connectors (e.g., forgetting 'na' for na-adj)
Expresses that A is a necessary prerequisite for B. B is usually an action based on the result of A. Note: 'V-辞書形 + ue de' means 'for the purpose of' or 'in terms of'.
Common mistakes
Confusing V-ta (sequence) with V-dictionary (context/purpose)
Using it for simple chronological order where 'te kara' is enough
V-意向形 + としているAbout to; is trying to; on the verge of
Indicates that an action is about to happen or someone is making an effort for an action to start. Often used for natural phenomena or formal descriptions.
Expresses that something the speaker intended or wanted to do was never realized, often with a feeling of regret. It is used for actions that missed their opportunity and are now in the past.
Common mistakes
Using with actions that have no prior intention
Confusing with simple past negative (nakatta)
Incorrect formation with 'suru' (shizujimai is wrong; should be sezujimai)