Japanese Particles So i'm doing some homework where I need to add a particle where it has ( ). I've been doing fine until I hit this. I can usually get the particle right because of context but I'm not sure what this sentence is supposed to say. I know it at least says at 3 went to library but I'm wondering if adding とafter Machida makes it into, At 3 I went to the library with Machida.. 三時（に）Machidaさん（と）としょかん（へ）いきました。