Matthew 1:20

The fact that τὸ (that which) and γεννηθὲν (that which is conceived/begotten) are in the neuter may be of no consequence. Perhaps the author mistakenly forgot to write these in the masculine him, to refer to the Messiah. Or perhaps not.

Strongs #G3880 παραλαμβάνω (paralambano), receive from, take from, take to oneself, receive something transmitted. This word can be tricky considering that παρα "close beside." When the verb παραλαμβάνω (paralambano) is used with a person, it typically signifies either taking something from them or receiving the person themselves. In this case we have τὴν γυναῖκά σου "the woman of yourself" which is in the accusative. The translation "as your wife" is changing the clause and adding the word "as". Greek employs a more common word λαμβάνω (lambano) for "to take." See Logeion on paralambanó and lambano.