Mimi Kara Oboeru N3 Grammar – せいか (sei ka)

Mimi Kara Oboeru N3 Grammar – せいか (sei ka)
Here is Japanese N3 grammar study material taken from the Mimi Kara Oboeru N3 textbook.

～せいか
a. Meaning: it cannot be said for sure, but the cause may well be ~

b. Structure:
Usage (使い方)
Vる/Aい + せいか
N + の + せいか
Aな + な/だった + せいか

気のせいか、最近父は元気がないようだ。
Ki no sei ka, saikin chichi wa genki ga nai yōda.
Perhaps because he worries too much, Dad has not seemed well lately.

年のせいか、このごろ物忘れがひどい。
Toshi no sei ka, konogoro monowasure ga hidoi.
Perhaps because of my age, my forgetfulness has got really bad lately.

このあたりは気候が温暖なせいか、のんびりしていて暮らしやすい。
Kono atari wa kikō ga ondan’na sei ka, nonbiri shite ite kurashi yasui.
Perhaps because the climate here is mild, I find it comfortable and easy to live in.