go to, go on, go for, go -ing

昨日の勉強の復習
たぶん自分が混乱しやすいやつなので
まとめてみる。

go to
I go to the post office.
homeはtoいらない。
I go home.

go on
I go on a trip.

go for
I go for walk.

go -ing

I go shopping.

これらを組み合わせて作文。
I’m going for relax on a trip to Atami.
I’m going shopping for a trip.
I’m going shopping for to buy some stamps to the post office.

とても簡単なことなんだけど
混乱しやすいのね^^;