近义词
辨析 Minimal pairs — easily-confused words, one topic at a time. Pick a pair, learn the rule, then test yourself.

Choose a pair — 选择词组

类型 × 类别“type / kind” vs “category / classification” — 20 sentences Pair 01→ 帮助 × 帮忙two ways to say “help” — object verb vs separable verb — 20 sentences Pair 02→