帮你辨析-can-,be-able-to

帮你辨析：can和beableto各尽所能仔细观察下面的例句，然后补全归纳部分所缺的内容。【例句】a.Shecan/isabletospeakEnglishverywell.b.Icould/wasabletoplaytheviolinwhenIwasyoung.c.Thebabywillbeabletowalkinafewdays.d.Ihopetobeabletopasstheexam.【归纳】1.通过观察例句a和例句可知，can与beableto均可表示某人做某事的，常可互换，后均跟动词原形。从时态形式来看，can只有现在式和过去式两种。2.通过观察例句c和例句d可知，而则可根据需要用语各种时态，还可以和动词不定式等非谓语形式连用。Key:1.能力；could2.beableto【即时演练】用can或beableto的正确形式填空，完成下列句子。1.Tomgoesswimmingeveryweek.Nowheswimverywell.2.Inthepast,manychildrengotoschool,andtheyhavetostayathome3.IamsurethatIwillfinishtheworkontime.Keys:1.can/isableto2.couldn’t/weren’tableto3.beableto