Usages of dieser
In diesem Jahr möchte ich im Sommer ans Meer reisen.
This year I would like to travel to the sea in summer.
Dieser Hund trinkt Wasser.
This dog drinks water.
In diesem Stadtteil baut man gerade eine neue Brücke.
In this district they are currently building a new bridge.
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We have an entire course teaching German grammar and vocabulary.