Try to make a sentense.

When you would like to convey to someone your intention , feeling and etc, you have to express what to say.
In order to do it, you have to say some sentenses.

For making Japanese sentenses, you'd better think what to say in Enlish first but in Japanese word order.

For example,

"This is a pen" should be changed to " This , a pen , is " which is in Japanese word order.
Then translate each word into Japanese.

this: kore
pen : pen
is : desu

"This , a pen , is " : kore pen desu.

Then you put "wa" after the subject word, in this case, "This" is a subject.
And delete an article because we don't have any article in Japanese.

Kore wa pen desu.

When you make a sentense with an object word, "o" should be added to the end of the object word.

kau : buy

I buy a pen. : I , a pen, buy : Watashi wa pen o kau.

You already know how to make an easy Japanese sentense.
I hope you can try to make easy sentenses as much as possible.