Teach just [one grammar
pattern] in [language]: what
it does, when a native reaches
for it over the alternative,
six examples, five gap-fills
with answers.

One Grammar Pattern, Fully Drilled

One pattern, including when a native would choose it.

Prompt

Teach me just [one grammar pattern] in [language]: what it does, when a native speaker reaches for it instead of the alternative, six example sentences, then five gap-fill exercises with answers at the end.