7、optimistic adj. (反义词：pessimistic adj. 悲观的)

　　根据语境猜词义

　　(1)He is always optimistic about his future though he had experienced many failures.

　　(2)The little girl was optimistic that her mother would never be away from her.

　　根据语义找匹配

　　A. 乐观地认为……　B. 对……很乐观

　　(1) B　(2) A

　　be optimistic about sth.

　　对……很乐观，对……抱着乐观的态度

　　be optimistic that… 乐观地认为……

　　optimism n.

　　乐观主义，乐观论 (反义词：pessimism)

　　optimist n.

　　乐观主义者，乐天派 (反义词：pessimist)

　　根据括号内的汉语提示填空

　　His job is hard but without much money. However, he is always (1) optimistic about (对……很乐观) it. Every time his boss asked him to do this or that, he took his efforts to do it (2) optimistically (乐观地), because he is (3) optimistic that (乐观地认为) his boss will give him a rise after he finishes all his task successfully.

　　8、desert v．&n.

　　根据语境猜词义

　　(1)The guard deserted his post.

　　(2)The writer decided to live in the Sahara Desert for some time.

　　(3)The baby's mother deserted him soon after giving birth.

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