按等级分的语法
B2
B2 有 8 个题目。每个先讲规律，再给练习。
Verbs that change meaning: stop, remember, try, meanWhich verbs change meaning with -ing and to?Must have, might have, should have, needn’t haveHow do you use must have, might have and needn’t have?Wish, if only, it’s time, would ratherWhy does English use past tenses to talk about the present?Articles: a, an, the, and none at allWhen do you use a, an, the, or no article at all?Reported speechHow do tenses change in reported speech?Narrative tensesHow do you use the past perfect and past continuous in a story?Although, despite, whereas, neverthelessWhat is the difference between although, despite, whereas and nevertheless?Dependent prepositionsWhich preposition goes with depend, result, accuse, blame and insist?