专题十三 构词法1.(2019·全国卷Ⅰ，62)It is difficult to figure out a global population of polar bears as much of the range has been ________ (poor) studied.答案：poorly 修饰谓语动词 has been studied 应用形容词 poor 的副词形式 poorly。2．(2018·全国卷Ⅰ，68)To avoid knee pain, you can run on soft surfaces, do exercises to ________ (strength) your leg muscles ( 肌肉), avoid hills and get good running shoes.答案：strengthen 在不定式符号 to 后面用动词原形。3．(2018·浙江高考，62)The obvious one is money; eating out once or twice a week may be ________ (afford) but doing this most days adds up.答案：affordable be 动词后接形容词作表语。affordable “付得起的”。4．(2018·全国卷Ⅰ，43)And, even if I weren't ________ (excite) enough about free credits, news about our instructor was appealing enough to me.答案：excited be 动词后面应用形容词，此处修饰人，故填 excited。5．(2018·全国卷Ⅱ，55)________ (fortunate), after a brief stay in hospital, Ben was well enough to be allowed to leave and later the family met up for dinner.答案：Fortunately 副词作状语修饰整个句子，故用 Fortunately。6．(2018·全国卷Ⅱ，59)I still can't believe what a ________ (coincident) it was.答案：coincidence 此处不定冠词 a 后面应接名词，故填 coincidence。7．(2018·全国卷Ⅲ，48)In her ________ (excited), she didn't seem to realize that she was sharing the baby's photos with a complete stranger.答案：excitement 介词 In 后应接名词，故填 excitement。8 ． (2017· 全 国 卷 Ⅰ ， 69)However, be ________ (care) not to go to extremes.答案：careful 名词加后缀ful 变成形容词，作表语或定语。此句用于 be careful (not) to do sth.结构。9．(2017·全国卷Ⅲ，70)It is ________ (certain) fun but the lifestyle is a little unreal.答案：certainly 此处应用副词修饰形容词 fun, certain 加后缀ly 构成其副词形式。10 ． (2017·...
