【正文】
Module 5 Rules and suggestions Unit 1 You must keep to the path. 1. Before we can enjoy ourselves on the Great Wall, there are a few rules and ,還有一些規(guī)定和建議。 can 是情態(tài)動(dòng)詞,意為“能夠”,表能力。如: He can speak 。 can 與 be able to (1)can 表示過(guò)去或現(xiàn)在“能夠”時(shí),可以與 be able to 通用。如: He could/was able to run very fast when he was a boy. 他小時(shí)候 就能跑得很快。 (2)can 通常只用于一般現(xiàn)在時(shí)或一般過(guò)去時(shí),而 be able to 可 用于各種時(shí)態(tài)。如: He has not been able to e since he got ,他 就一直未能前來(lái)。 (3)在表猜測(cè)時(shí),只能用 can,不能用 be able to。如: That can39。t be your 你的書(shū)包。 ① Susan is good at English and she ________ sing English songs.(2021 年福建 龍 巖 ) A. need B. may C. can C 題意:蘇珊擅長(zhǎng)英語(yǔ),而且她會(huì)唱英語(yǔ)歌。 can 表示能 力,意為“能夠”。 A. can39。t C. won39。t be able to B. couldn39。