Stem + たい (Expression of the speaker's wish)

The Stem of a verb is seldom used in isolation. When it is used alone, it is used as a noun. Most of the time, the Stem is followed by another element. In this exercise, we will create a form that expresses the speaker's wish by adding たい to the Stem of a verb. So, what you need to learn is how to form the Stem.

• Group 1 verb: drop るof the dictionary form
• Group 2 verb: change the final vowel u to i
• Group 3 verb: くる→き、する→し

For instance, the Stem of the verb 行く（いく）, which means "to go", is 行き（いき）, so when you add たい, it yields the form 行きたい（いきたい）, meaning "I want to go." This newly-formed word is an adjective and has the following four aspects. Notice that the changes occur only on the ending, たい.

Although you cannot use the Stem with たい to express the third-person's wishes, it may be used to ask questions directly to the addressee.