四年级第一单元（Grade 4 Unit 1）汇总 1.Let sb. do sth. 让某人做某事 例如： Let me help you. Let us go! ( let us= lets ) 2. Clean v. 打扫，清洁 例如：clean the window 擦洗窗户 clean the classroom 打扫教室 clean the board(= blackboard) 擦黑板 clean the fish bowl 擦洗鱼缸 clean the desk 擦桌子 adj. 干净的，清洁的 (dirty adj. 脏的，脏乱的) 例如： Our classroom is very clean. 3. Where is/ are sth. 某物在哪里？ 例如：Where is my book Where is his pen Where are her friends Where are their chairs 4. open the door turn
