これは

expression

as for this; this (topic)

Used to introduce or emphasize the current topic, often at the beginning of a statement. Equivalent to これ + topic marker は.

• これは私わたしの本ほんです。

  This is my book.

• これは大だい事じな問もん題だいだ。

  This is an important issue.

interjection

hey!; look here!; well!

Interjection expressing surprise or drawing attention when encountering something unexpected. Often used in casual speech; compare with こりゃ.

See also: こりゃ

• これは驚おどろいた！

  Well, I'm surprised!

• これはこれは、久ひさしぶりですね。

  Well, well, long time no see.