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明日、会社にいってきます
I'm going to the office tomorrow and will be back.
A polite phrase used when leaving a place to indicate you will return later. Literally means 'I go and come back.'
ちょっとスーパーにいってきます
I'll just go to the supermarket and be right back.
今から会議にいってきます
I'm going to the meeting now and will return.
This phrase is commonly used in casual conversation. The response is often 'いってらっしゃい' (go and come back).
When someone says 'いってきます,' the typical response is 'いってらっしゃい' (go and come back).
This phrase is polite but casual. For more formal situations, use '行って参ります'.
Combination of 'いく' (to go) + 'て' (te-form) + 'きます' (polite form of 'くる' to come).
This phrase is used when leaving a place where you will return later. It is more casual than '行って参ります' but still polite. The response is typically 'いってらっしゃい' (go and come back).