That is quite usual with him.
それは彼にとってはいつものことだ
That is reason enough.
それは十分な理由だ
That isn't a mansion as such. It's just a large home.
あれは大邸宅などではなく，ただの大きな家だ
That isn't done here.
ここではそんなふるまいは許されない
That isn't quite the thing.
（社会的に）許されないことだ，ほめられたものではない
That kind of behavior won't win you any friends.
そんな態度では友人は得られない
That kind of talk will get you nowhere.
そんな話をしても役に立たないだろう
That large fish will serve three to four people.
その大きな魚を調理すると３－４人前になる
That little cat went meow, meow, meow.
その小ネコがニャーニャー鳴いた
That machine is difficult to operate.
あの機械は操作がむずかしい
