This morning one of my instructors ("D.") walked into my office with a story about today's lesson in his class, which happened to be adverbs of frequency -- always,never, usually, etc.
D. asked each student, "What do you always do in the morning?"
One student responded, "I always drink tea in the morning."
The next one also said, "I always drink tea in the morning."
Now, there's always the chance in drills like this that a student is just imitating the successful response of the previous student rather than giving a meaningful answer, so D. decided to probe.
"You always drink tea?" he asked. "You don't drink coffee?"
The student was very sure of his reply. "I always drink tea," he said. "I never drink coffee. Gives me gas."