It's going to rain.
（空模様から）雨になりそうだ
It's going to work out to be expensive [at [to] $300].
高くつく［３００ドルになる］
It's gone five o'clock already.
もう５時過ぎだ
It's good to see you again.
またお目にかかれてうれしいです
It's got everything to do with you.
全部君の問題［せい］だ
It's got sentimental value.
それには愛着がある
It's gotten slightly colder.
少し寒くなってきた
It's great fun walking along the shore.
海岸を歩くのはとても楽しい（◆((米略式))ではvery funともいう）
It's great in theory, but in practice it sometimes doesn't work.
それは理論的には結構だが，実際にはときどきうまくいかない
It's great to see you again.
また会えて本当にうれしい
