HSK 1
是
shì动
to be (followed by substantives only); correct; right; true; (respectful acknowledgement of a command) very well; (adverb for emphatic assertion)
这是我姐姐的电脑。
Zhè shì wǒ jiějie de diànnǎo.
This is my older sister's computer.
Say it
Hold the button, say it, then let go.
Other HSK words sharing a character
Also free:
New in the HSK 3.0 word list at level 1.