一把伞 One Umbrella ; an umbrella

两把伞 Umbrellas

如果必要的话带一把伞 bring an umbrella if necessary

这是一把伞 This is an umbrella

如果必要带一把伞 If you need an umbrella

给我一把伞 Give me an umbrella

你需要一把伞 You need an umbrella

你带把伞 take an umbrella with you

借我一把伞 Lend Me An Umbrella

把伞支开 put up an umbrella