とIf, When, Whenever, And, [Conditional]

と is used to express natural or habitual results, as in 春が来ると花が咲く ('When spring comes, flowers bloom.'). もし adds emphasis to conditionals and can appear before と or other conditionals like たら and ば. For example, もし雨が降ったら 'if it rains' has a more hypothetical tone than if もし were not present.

と marks a natural condition, while そうすると is used to explain what would happen in that case. It means 'if that happens' or 'then...' and often introduces a result. For example, 早く寝なさい。そうすると、明日は元気になるよ ('Go to bed early. Then you'll feel good tomorrow.')

と marks a natural result, while すると is a transition word meaning 'thereupon' or 'and then'. It's often used at the beginning of a new sentence to show what happened next. For example, ドアを開けた。すると、猫がいた ('I opened the door. And there was a cat.'

と and ばあいは can both express conditions, but differ significantly in usage. と describes something that happens habitually or as a natural result, e.g. お酒を飲むとすぐ酔っ払ってしまう ('When I drink alcohol, I get drunk quickly.'). ばあいは is used more for situational instructions, like お酒を飲む場合は運転しないほうがいい ('In the event that you drink alcohol, you shouldn't drive.').

ば and と are both conditional expressions, but differ in nuance. ば emphasizes the condition that leads to a result, often with an 'if and only if' tone. と is used for habitual or automatic outcomes, suggesting that what follows happens naturally or inevitably when the condition is met.

Both と and なら are conditional expressions, but differ in nuance. と is used for habitual or automatic results, e.g. 春になると花が咲く ('When it becomes spring, flowers bloom.'). なら is used for one-time or assumed situations and implies the speaker believes the condition is likely, e.g. 雨なら出かけない ('If it's going to rain, I won't go out.').

たら and と are both conditional forms, but they differ in nuance and usage. たら expresses both 'if' and 'when', and can describe hypotheticals or one-time events, such as 雨が降ったら行きません ('If it rains, I won't go.'). と is used for regular or expected outcomes, as in 春になると桜が咲く ('When spring comes, the cherry blossoms bloom.').