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I'm home!; I'm back!; it's me!
now; at present; at the moment
just now; a moment ago
at once; right away; in a minute; shortly; soon
玄関を開けて「ただいま」と大きな声で言った。
I opened the front door and said 'I'm home' loudly.
仕事から帰って「ただいま」と家族に挨拶した。
I came home from work and greeted my family with 'I'm home.'
子供が学校から帰って「ただいま」と言った。
The child came home from school and said 'I'm home.'