同房时应该怎么说英语

"Sharing a room" or "sharing a bedroom" are phrases that can be used to describe the situation of two people staying in the same room. For example, you might say:
"I'm going to be sharing a room with my sister on our trip."
"We're going to be sharing a bedroom in our new apartment."
It's also common to use the phrase "doubling up" or "double occupancy" to describe this situation. For example:
"The hotel is fully booked, so we're going to have to double up in a room."
"We decided to get a room with double occupancy to save money on our vacation."
If you need to specify that you'll be sleeping in the same bed, you can use phrases like "sharing a bed" or "sharing a sleeping arrangement". For example:
"We're going to be sharing a bed during our stay at the hotel."
"We have a small room, so we'll be sharing a sleeping arrangement."
I hope this helps! Let me know if you have any other questions.