His U.S. counterpart, Trade Representative Mickey Kantor, greeted him with an unexpected gesture—a gift of a “shinai” bamboo practice sword used in the Japanese martial art of kendo.

For example, if you want to say "I must study," you first change the verb BENKYÔ SHIMASU (to study) to its NAI-form, BENKYÔ SHINAI. Then, you replace NAI by NAKEREBA NARIMASEN. So, you say ...