Particles like で, に, を, は are some of the most difficult grammar points for Japanese learners. Many Japanese learners in upper levels still get confused about how to use particles correctly. But you don't have to be too worried. The key to understand particles is to grasp the concept of each particle. Let’s understand the basic concept of で (de) and use it like a native Japanese. で (de) particle で (de) is one of the basic Japanese particles and is mainly used for four types of expressions. The basic concept of the で (de) particle is “a boundary.” ...