37．You'd better take an umbrella with you when you go out. (改为否定句)
You'd better ________ ________ an umbrella with you when you go out.
38．Eric has been teaching himself French since 3 years ago. (对划线部分提问)
________ ________ has Eric been teaching himself French?
39．The headmaster awarded Emily the first prize in the English speech contest. (改为被动语态)
Emily ________ ________ the first prize in the English speech contest by the headmaster.
40．Did Bob catch the plane last weekend? Could you tell me? (改为含宾语从句的主从复合句)
Could you tell me ________ Bob ________ the plane last weekend?
41．The students in Class 5 are very excited to go on a picnic in Century Park. (改为感叹句)
________ ________ the students in Class 5 are to go on a picnic in Century Park!
42．It is reported that this kind of disease can do harm to people and animals. (保持原句意思)
It is reported that this kind of disease can ________ ________ to people and animals.
43．Tom, to make, tells, every night, stories, his baby sister, go to sleep, her (连词成句)
________________________
37．
【答案】not take
【解析】固定搭配had better do sth“最好做某事”，其否定形式是had better not do sth“最好不做某事”，原句中动词是take，所以空格处填not take。故答案为not take。
38．
【答案】How long
【解析】划线处since 3 years ago“自从三年前”，是一段时间，对此提问要用how long“多久”，位于句首的单词首字母要大写，所以空格处填How long。故答案为How long。
39．
【答案】was awarded
【解析】被动语态的结构为：主语（原宾语）+be done+by+宾语（原主语宾格）。原句中谓语动词是awarded，是一般过去时，所以空格处也要填一般过去时的被动语态。主语Emily是第三人称，所以系动词用一般过去时was。award的过去分词是awarded，所以空格处填was awarded。故答案为was awarded。
40．
【答案】whether/if caught
【解析】原句中Did Bob catch the plane last weekend是个疑问句，所以改为宾语从句后，用引导词whether/if“是否”引导宾语从句。宾语从句中从句要用陈述语序，且时态遵循“主现从不限”原则。原题中did是一般过去时的助动词，所以从句中要把动词catch改为一般过去时caught，故空格处填whether/if，caught。故答案为whether/if，caught。
41．
【答案】How excited
【解析】感叹句的结构：how+形容词/副词+主语+谓语；what+a/an+形容词+可数名词单数；what+形容词+不可数名词/可数名词复数。原句中excited是形容词，the students in Class是主语，are是谓语，所以用how引导的感叹句结构。位于句首的单词首字母要大写，所以空格处填How excited。故答案为How excited。
42．
【答案】be harmful
【解析】原句中do harm to sb表示“对某人有害”，等同于be harmful to sb“对某人有害”。空格前can是情态动词，后接动词原形，所以空格处填be harmful。故答案为be harmful。
43．
【答案】Tom tells his baby sister stories to make her go to sleep every night.
【解析】Tom，人名；to make动词不定式，表示“为使”；tells动词，表示“告诉”；every night表示“每个晚上”；stories名词复数，表示“故事”；his baby sister表示“他的小妹妹”；go to sleep表示“入睡”；her人称代词宾格/形容词物主代词，表示“她/她的”。原句表示“汤姆给他的小妹妹讲故事，让她每晚都能入睡”，所以空格处填Tom tells his baby sister stories to make her go to sleep every night。故答案为Tom tells his baby sister stories to make her go to sleep every night。
You'd better ________ ________ an umbrella with you when you go out.
38．Eric has been teaching himself French since 3 years ago. (对划线部分提问)
________ ________ has Eric been teaching himself French?
39．The headmaster awarded Emily the first prize in the English speech contest. (改为被动语态)
Emily ________ ________ the first prize in the English speech contest by the headmaster.
40．Did Bob catch the plane last weekend? Could you tell me? (改为含宾语从句的主从复合句)
Could you tell me ________ Bob ________ the plane last weekend?
41．The students in Class 5 are very excited to go on a picnic in Century Park. (改为感叹句)
________ ________ the students in Class 5 are to go on a picnic in Century Park!
42．It is reported that this kind of disease can do harm to people and animals. (保持原句意思)
It is reported that this kind of disease can ________ ________ to people and animals.
43．Tom, to make, tells, every night, stories, his baby sister, go to sleep, her (连词成句)
________________________
37．
【答案】not take
【解析】固定搭配had better do sth“最好做某事”，其否定形式是had better not do sth“最好不做某事”，原句中动词是take，所以空格处填not take。故答案为not take。
38．
【答案】How long
【解析】划线处since 3 years ago“自从三年前”，是一段时间，对此提问要用how long“多久”，位于句首的单词首字母要大写，所以空格处填How long。故答案为How long。
39．
【答案】was awarded
【解析】被动语态的结构为：主语（原宾语）+be done+by+宾语（原主语宾格）。原句中谓语动词是awarded，是一般过去时，所以空格处也要填一般过去时的被动语态。主语Emily是第三人称，所以系动词用一般过去时was。award的过去分词是awarded，所以空格处填was awarded。故答案为was awarded。
40．
【答案】whether/if caught
【解析】原句中Did Bob catch the plane last weekend是个疑问句，所以改为宾语从句后，用引导词whether/if“是否”引导宾语从句。宾语从句中从句要用陈述语序，且时态遵循“主现从不限”原则。原题中did是一般过去时的助动词，所以从句中要把动词catch改为一般过去时caught，故空格处填whether/if，caught。故答案为whether/if，caught。
41．
【答案】How excited
【解析】感叹句的结构：how+形容词/副词+主语+谓语；what+a/an+形容词+可数名词单数；what+形容词+不可数名词/可数名词复数。原句中excited是形容词，the students in Class是主语，are是谓语，所以用how引导的感叹句结构。位于句首的单词首字母要大写，所以空格处填How excited。故答案为How excited。
42．
【答案】be harmful
【解析】原句中do harm to sb表示“对某人有害”，等同于be harmful to sb“对某人有害”。空格前can是情态动词，后接动词原形，所以空格处填be harmful。故答案为be harmful。
43．
【答案】Tom tells his baby sister stories to make her go to sleep every night.
【解析】Tom，人名；to make动词不定式，表示“为使”；tells动词，表示“告诉”；every night表示“每个晚上”；stories名词复数，表示“故事”；his baby sister表示“他的小妹妹”；go to sleep表示“入睡”；her人称代词宾格/形容词物主代词，表示“她/她的”。原句表示“汤姆给他的小妹妹讲故事，让她每晚都能入睡”，所以空格处填Tom tells his baby sister stories to make her go to sleep every night。故答案为Tom tells his baby sister stories to make her go to sleep every night。
