kono jishoapuri o tsukatte mimasu.

I will try using this dictionary app.

Breakdown of kono jishoapuri o tsukatte mimasu.

• を: direct object particle
• この: this
• 辞書じしょアプリ: dictionary app
• 使つかって みる: to try to use

Questions & Answers about kono jishoapuri o tsukatte mimasu.

Why are there spaces in この　辞書アプリ　を　使って　みます? I thought Japanese usually doesn’t use spaces.

You’re right: normal Japanese is usually written without spaces.

So the standard writing is:

この辞書アプリを使ってみます。

The spaces here are just for learners, to make the parts easier to see:

• この = this
• 辞書アプリ = dictionary app
• を = object marker
• 使ってみます = will try using

What does この mean here, and why is it この instead of これ?

この means this, but it must come before a noun.

• この辞書アプリ = this dictionary app

By contrast:

• これ = this one / this thing

So you can say:

• この辞書アプリ = this dictionary app
• これは辞書アプリです = This is a dictionary app.

You cannot say これ辞書アプリ.

A useful pattern is:

• この + noun = this + noun
• その + noun = that + noun
• あの + noun = that + noun over there

Is 辞書アプリ one word?