To say something is “too much” or “too small” or that we drank “too much” and so forth, we use the verb
For i-adjectives we remove the い and add すぎる.
And because it’s now treated as a verb we can use the te form; however, note that the object still requires the が particle.
|The computer was too expensive so I didn’t buy it.|
|The movie was too scary so I couldn’t watch until the end.|
For na-adjectives we just add すぎる without the auxiliary verb or な particle.
|This maths problems is too complicated so I’ll ask the teacher tomorrow.|
For verbs we need to use the verb stem.
|I drank too much yesterday—my head hurts!|