中学生世界九年级英语沪教版54制
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47. Your passport requires a
recent
photo of you. (recently)
答案：recent
解析：此处需要形容词修饰名词photo，recently的形容词形式是recent，意为“近期的”。
The
thirtieth
Olympics took place in London 2012. (thirty)
答案：thirtieth
解析：表示“第……届奥运会”用序数词，thirty的序数词是thirtieth。
49. Don't jump to
conclusions
before you make a decision. (conclude)
答案：conclusions
解析：jump to conclusions是固定短语，意为“草率下结论”，用名词复数形式。
50. China landed a rover on Mars to
discover
if life exists on it. (cover)
答案：discover
解析：句意为“中国将探测器登陆火星是为了发现是否有生命存在”，cover的“发现”含义对应的动词是discover。
51. There was no
proof
that Adair was murdered by someone. (prove)
答案：proof
解析：no后接名词，prove的名词形式是proof，意为“证据”。
______
Has
______ Ken ______
dealt
______ with a strange theft recently?
答案：Has; dealt
解析：原句是现在完成时，改为一般疑问句将助动词has提前，动词dealt保持不变。
53. Jill was no longer a suspect,
was she
?（补全反意疑问句）
答案：was she
解析：前半句是否定句（no longer表示否定），反意疑问句用肯定形式，主语是Jill，用she代替，be动词用was。
______
How
did Detective Ken ______
check
the scene of crime?
答案：How; check
解析：对“very carefully”（方式）提问用how，原句是一般过去时，助动词did后接动词原形check。
55. Eric is absent from school today because he is having a fever. (保持原句意思) Eric is absent from school today
because of
a fever.
答案：because of
解析：because后接句子，because of后接名词或名词短语，a fever是名词短语，所以用because of。
56. If Tom doesn't give up his bad learning habits, he can't improve his grades. (保持原句意思) ______ Tom ______ up his bad learning habits, he can't improve his grades.
答案：Unless; gives
解析：“If...not”可替换为“Unless”，主语Tom是第三人称单数，动词give用gives。
57. "Don't talk loudly," the librarian reminded us. (改为简单句) The librarian reminded us
not to
talk loudly.
答案：not to
解析：remind sb. not to do sth.是固定用法，意为“提醒某人不要做某事”。
58. to know, next, I was, nervous, what to say, too (连词成句)
答案：I was too nervous to know what to say next.
解析：too...to...表示“太……而不能……”，“what to say next”是“疑问词+不定式”结构作know的宾语，按此逻辑组合成句。
