will, probably, may, I think, surely, I hope, I fear, it seems
Verb / い-Adjective (Informal) +
To express written conjecture with verbs and い-Adjectives, append
Verb
Attach
電車はすぐ来る
The train will probably arrive soon.
荷物はもう届いた
The package probably arrived already.
い-Adjective
Attach
今年の夏は暑い
This summer will probably be hot.
昔の生活は苦しかった
Life in the past was probably hard.
Noun / な-Adjective +
For nouns and な-Adjectives, attach
な-Adjective
Attach
その計画は安全
That plan is probably safe.
昔、ここは不便だった
In the past, this place was probably inconvenient.
Noun
Attach
その話は嘘
That story is probably a lie.
ここは昔、海だった
This place was probably the ocean in the past.
A common mistake is adding the copula だ before