外研版九年级英语上册《There were few doctorsso he had to work very hard on his own》Heroes PPT课件(第1课时)，共10页。
operation名词，意为“手术”。
【拓展】operate动词，意为“动手术”。operate on意为“给······动手术”，on为介词，后接表示人或身体部位的名词或代词。
【注意】①have an operation意为“做手术”，该短语中的have有“进行”的意思，表示某人因健康问题而进行手术，主语常是病人。
②do an operation意为“做手术”，其主语是医生，而不是病人。
【辨析】sick与ill
两者都有“病的；生病的”之意，但用法不同。
①sick既可作表语，又可作定语，其名词形式为sickness。
②ill只能作表语，其名词形式为illness。
eg：He is taking care of the sick child.他在照顾生病的孩子。
She is sick/ill in hospital.她生病住院了。
die for意为“为······而死”。
die动词，意为“死”，其名词形式为death，形容词形式为dead，现在分词形式为dying。die为短暂性动词，不能和表示一段时间的状语连用，可转换为be dead表示状态，此时可与表示一段时间的状语连用。
eg：Her grandfather has been dead for several years.
＝Her grandfather died several years ago.她的祖父去世好几年了。
【辨析】die of与die from
①die of指死于疾病、衰老、饥饿等，原因多来自内部，后常接名词。
eg：He died of a strange illness.他死于一种怪病。
②die from指由于外伤或不注意的原因而死，原因常来自外部，后常接名词。
eg：His father died from an accident.他的父亲死于一次事故。
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