Explanation
The rest of the body. Note das Haar — Germans usually say it in the singular for the whole head of it (Ich wasche mir die Haare is the plural, but mein Haar ist kurz is normal too), and das Knie keeps its shape in the plural: die Knie.
Explanation
The rest of the body. Note das Haar — Germans usually say it in the singular for the whole head of it (Ich wasche mir die Haare is the plural, but mein Haar ist kurz is normal too), and das Knie keeps its shape in the plural: die Knie.