¿Cómo lo sabe?

¿Cómo lo sabe?
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
1.
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
(formal)
(second person singular)
a. How do you know?
Usted tiene 30 años, es médico y está casado, ¿verdad? - ¿Cómo lo sabe?You're 30 years old, you're a doctor, and you're married, right? - How do you know?
b. How can you tell?
Este billete es falso. - ¿Cómo lo sabe?This bill is counterfeit. - How can you tell?
a. How does he know?
A word or phrase that is masculine (e.g., el libro).
(masculine)
Sabe que su esposa lo engaña. - ¿Cómo lo sabe?He knows that his wife is cheating on him. - How does he know?
b. How does she know?
A word or phrase that is feminine (e.g., la manzana).
(feminine)
Ana me dijo que Isabel está esperando un bebé. - ¿Cómo lo sabe? Ayer vi a Isabel y no me dijo nada.Ana told me that Isabel is expecting a baby. - How does she know? I saw Isabel yesterday and she didn't tell me anything.
c. How can he tell?
A word or phrase that is masculine (e.g., el libro).
(masculine)
El informático dice que la computadora tiene un virus. - ¿Cómo lo sabe? - Bueno, es un experto, ¿no?The IT guy says the computer has a virus. - How can he tell? - Well, he's an expert, isn't he?
d. How can she tell?
A word or phrase that is feminine (e.g., la manzana).
(feminine)
Rosa dice que siempre sabe cuándo un hombre está enamorado de ella. - ¿Cómo lo sabe?Rosa says that she can always tell when a man is in love with her. - How can she tell?
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