Unit19词汇 短语 句型练习高三英语一轮基础知识复习北师大版选修七.doc

2022高考英语一轮基础知识复****词汇+句型+语法）
（北师大版 选修七 unit 19）
 1.absence n.缺乏,不存在;缺席
However,learning English as a foreign language is very difficult in the absence of a native language environment.
然而,作为一门外语,学****英语没有母语环境是很难的。
知识延伸
①in the absence of缺乏……时,当……不在时
absence of mind精神不集中,心不在焉 absence from缺席
②absent adj.缺席的;缺乏的,不存在的　v.缺席,不参加 be absent (from)缺席(……)
知识运用
①The children decorated the house beautifully to celebrate their grandmother’s birthday 　　　　　the absence of their mother. 
②The company will be in the charge of Bush during his father’s 　　　　　(absent). 
③Now all that was needed were the parents,but they were 　　　　　(absence). 
④主持人没有解释主席为什么缺席了那次重要会议。
 
2.surround vt.环绕,围绕;包围;与……紧密相关
Some respected theories on language acquisition believe that to attain a high level of fluency and accuracy in a foreign language,you need to be surrounded by it.
根据有些受人推崇的语言****得理论,学外语要达到一种高水平的流利程度和准确度,你需要置身于这种语言之中。
知识延伸
①surround sb/sth包围某人/物 surround sb/sth with sb/sth使某人/物包围某人/物
be surrounded by/with sb/sth被某人/物所包围
②surroundings n.环境
知识运用
①Now we live in a world 　　　　　(surround) by the “can’t do” attitudes.
②And don’t forget:we are 　　　　　(surround) by a natural playground just perfect for walking,caving,climbing and cycling.
③作为一位经验丰富且受欢迎的老师,周老师下课后总是被学生包围着,向他咨询一些问题。
As an experie