To sign 'did you eat', form your dominant hand into a flattened 'O' shape, bringing your fingers and thumb together as if holding a piece of food. Bring your fingertips to your lips and tap them once or twice. Crucially, you must raise your eyebrows and tilt your head slightly forward to indicate that you are asking a yes/no question.
Sign 'LUNCH' followed by 'EAT' while raising your eyebrows and leaning forward to show it is a question.
Sign 'HUNGRY', then point to the person and sign 'EAT' with the proper yes/no question facial expression.
Sign 'APPLE', 'ALL', and then 'EAT' with raised eyebrows to ask if they consumed them all.
Sign 'LUNCH' followed by 'EAT' while raising your eyebrows and leaning forward to show it is a question.
Sign 'HUNGRY', then point to the person and sign 'EAT' with the proper yes/no question facial expression.
Sign 'APPLE', 'ALL', and then 'EAT' with raised eyebrows to ask if they consumed them all.
No, you don't need to sign 'did'. In ASL, yes/no questions are indicated by raising your eyebrows. While you can point to the person for 'you', simply signing 'eat' while looking at them with raised eyebrows is usually enough to ask 'did you eat?'.
Yes, 'eat' and 'food' use the same handshape and location. Generally, 'eat' uses a single, larger motion, while 'food' uses a smaller, double tap. However, when asking 'did you eat?', the context and your questioning facial expression make your meaning perfectly clear.
In ASL, facial expressions act as grammar. Raised eyebrows and a slight forward head tilt are the specific grammatical markers used to ask a yes/no question. Without this expression, you are just stating the word 'eat' rather than asking a question.
