_______in the chair is Mr.Smith,a professor who will give us

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_______in the chair is Mr.Smith,a professor who will give us a lecture on how to learn English well.
这个空一共有四个选项,我选的是Seating,正确答案是Seated,不太明白.

快乐学习,宇涛英语（028-87021828）
亲,你是把seat 和 sit 搞混咯!先来区分一下：
1.seat
有两种词性 n.和vt.
做名词时用法：take a/one's seat 坐下来,就座
如：Take your seat ,please.请坐.（平级之间）
作动词时及物动词,后面必须有宾语或用其被动语态
如：Be seated,please.请坐.（很礼貌的用法）
seat sb.某人就座 seat yourself ,seat him
2.sit
vi.不及物动词,不可以直接接宾语
如：Sit down,please.请坐.（有命令语气）
seat和sit的例句比较：
（1）He is sitting there．他正坐在那儿
（2）You seat him．你给他找个座位
所以,可以是sitting in the chair,但不能是seating in the chair
可以是seated in the chair,但不能是sitted in the chair
快乐学习,宇涛英语（028-87021818）

（）in the chair is Mr.Smith,a professor who will give us a le Mr Smith is going to give us a talk ___ the study of English Professor Smith will come here to give a speech.All the prep Mr.Smith comes from London,he will give us a ______(报告)on En Will Mr Smith give us a talk tomorrow?Yes,I s__ so.根据首字母写单词. Mr Smith will give us a talk on reading s___ next Tuesday This afternoon Mr Smith will give us a report on nuclear ene The professor ______ at the meeting will give us a lecture n mr smith is going to give us a talk-----.A.at this afternoon 一道英语选择题!I hear Mr Smith is coming to give us a talk_____.A.i Who will give us a s___ at the meeting? Professor Wang will give us a lectrue on the black hole,but