toothbrush
The Spanish phrase 'cepillo de dientes' translates to 'toothbrush' in English. This is a tool used in personal oral hygiene to clean one's teeth, usually in conjunction with toothpaste or mouthwash. The brush generally has a small head of bristles that is held against the teeth, while the handle of the brush is held by hand.
Where is my toothbrush?
This is a basic question format in Spanish. Typically, the verb (is - 'está') comes before the subject (my toothbrush - 'mi cepillo de dientes').
I have lost my toothbrush.
In this example, 'He perdido' means 'I have lost'. This is a regular -ir verb in past perfect tense.
I need to buy a new toothbrush.
The verb 'necesito' (I need) is often followed by an infinitive verb 'comprar' (to buy). 'Nuevo' is an adjective that comes after the noun it describes, which is a common structure in Spanish.