Let's learn four more basic words that describe past days and weeks such as "yesterday" and "last week." The seven related words that you learned earlier are also listed here in gray for a review purpose. Click on the empty areas to reveal the words and hear the pronunciations. To see all the words, click on the checkbox (top left). The time particle に does not follow these words (e.g., スミスさんは、せんしゅう、日本に行きました).