Active Passive

Active — user can report

คำแนะนำของผู้เขียน

Change the active into passive, and passive into active. Look at the formula of the tenses. 

สำรวจแผ่นงาน

Insert a missing preposition

Grammar - ESL

INSERT A MISSING PREPOSITION

Workbook p10

Grammar - ESL

Past continuous

Past Perfect

Grammar - ESL

Helps to distinguish Past Perfect

Grammar Practice 3. Workbook Activities

Grammar - ESL

Select the correct modal verbs to make assumptions.