This is (the place) where the accident happened.
ここが事故現場です（◆the placeは通例省略）
This is ... reporting from Washington.
（報道中継などで）ワシントンから…がお伝えします
This is a chair and that is a table.
手前がいす，向こうがテーブルです
This is a dictionary, an encyclopedia, and a thesaurus all rolled into one.
辞書と百科事典とシソーラスが１つになったものだ
This is a difficult question. What is certainly clear, however, is that ....
これは難しい問題だ．しかしながら…であることは間違いない
This is a gift for her.
これは彼女への贈り物です
This is a guy who is hitting .350.
（テレビなどで見て）こいつは今打率３割５分だ
This is a hot day, isn't it?
今日は暑いですね
This is a job similar to hers.＝This is a similar job to hers.
これは彼女と同様の仕事だ
This is a little thick.
これはちょっとひどい
