Learn · ⁨学习⁩

English B1 · ⁨英语 B1⁩

Choose a lesson to begin. · ⁨选择一门课程开始。⁩

1 Present perfect vs past simple · ⁨现在完成时 vs 一般过去时⁩ 0 / 1

Present perfect vs past simple · ⁨现在完成时 vs 一般过去时⁩

2 Present perfect continuous · ⁨现在完成进行时⁩ 0 / 1

Present perfect continuous · ⁨现在完成进行时⁩

3 Past perfect · ⁨过去完成时⁩ 0 / 1

Past perfect — the past before the past · ⁨过去完成时 — 过去的过去⁩

4 used to · ⁨used to(过去的习惯)⁩ 0 / 1

used to — past habits · ⁨used to — 过去的习惯⁩

5 Future forms review · ⁨将来时复习⁩ 0 / 1

Future forms review · ⁨将来时复习⁩

6 Conditionals · ⁨条件句⁩ 0 / 1

Conditionals — first and second · ⁨条件句 — 第一与第二⁩

7 The passive · ⁨被动语态⁩ 0 / 1

The passive · ⁨被动语态⁩

8 Reported speech · ⁨间接引语⁩ 0 / 1

Reported speech · ⁨间接引语⁩

9 Relative clauses · ⁨定语从句⁩ 0 / 1

Relative clauses · ⁨定语从句⁩

10 Gerunds and infinitives · ⁨动名词与不定式⁩ 0 / 1

Gerunds and infinitives · ⁨动名词与不定式⁩