Questions & Answers about zhè shì hōnggānjī.
这 means this.
In Mandarin, 这 can stand on its own before 是 in a sentence like 这是…… = This is ….
- 这 = this
- 这个 = this one / this + classifier 个
So:
- 这是烘干机。 = This is a dryer.
- 这个是烘干机。 = This one is a dryer.
Both can be natural, but 这是…… is the most direct match for This is ….