观察下列句子，试着归纳其画线部分所包含的句型结构。

1．…,but in fact,3500 years ago, some recipes recommended drinking a tea made from the dried leaves of a particular plant to reduce body pains．

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2．Not only has aspirin saved many people’s lives by reducing fever and helping stop pain, but there are also other things that aspirin can help with．

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3．However, it was not until World War Ⅱ that two other scientists, Howard Florey(Australian)and Ernst Chain(German-born English),managed to use new chemical techniques to purify it．

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下面的一段文章为课文原文的浓缩，仔细阅读，根据原文章内容将其补充完整。

There are two common 　　1　　 that have 　　2　　 people’s lives, especial in the period of War Times．They are 　　3　　 and 　　4　　．The date that aspirin was 　　5　　 is given by 　　6　　 historians as 1897, not only 　　7　　 aspirin saved many people’s lives by 　　8　　 fever and 　　9　　 stop pain, but there are also other things that aspirin can help with．Such as 　　10　　 blood, 　　11　　 a stroke, 　　12　　 the risk of 　　13　　 cancer．　　14　　 the lenth of people’s lives, reducing blood sugar 　　15　　 and help people with 　　16　　．Penecillin was 　　17　　 by Alexander Fleming in 1928．It has helped 　　18　　 the standard of people’s health, it is 　　19　　 by many people to be one of the most important medicines in 　　20　　 society due to killing 　　21　　, it is very useful in helping to treat 　　22　　 and 　　23　　 caused by bacteria．Penicillin can also be used to treat other illnesses including 　　24　　, an illness that affects the lungs．It was widespread during the World War Ⅱ and rapidly became the powerful “　　25　　 drug”．