We often hear Czech students say things like I am lazy to do it. While it sounds logical (and mirrors Czech structure quite closely), it doesn’t work this way in English.
The problem is that the adjective lazy is not normally followed directly by an infinitive (to do something). In English, we need to adjust the structure to express the idea properly.
If you want to say that you don’t have the motivation or energy to do something, the most natural option is to use too lazy to. For example, I’m too lazy to cook today. This clearly expresses that your laziness prevents you from doing the activity.
Another very common and natural alternative is the phrase I don’t feel like…, which is followed by a verb in the -ing form. For example, I don’t feel like cooking. This is often even more conversational and widely used in everyday English.
