【正文】
Our teacher doesn39。s safe to swim C. better swim D. don39。北京 I ________ go now, or I39。 couldn39。 don39。 needn39。t have to.” 實戰(zhàn)演練 Ⅰ .單項填空 ( )1. 2022 3.在含有 must 的一般疑問句中,肯定回答為“ Yes,主語+must.”,否定回答為“ No,主語+ needn39。t have to(不必 ), mustn39。 (不得不做 ) We must be there on time. 我們一定準(zhǔn)時到達(dá)。 No smoking! 禁止吸煙! No fishing!禁止釣魚! 二、 have to與 must 1. have to 表示客觀上“不得不”, must 表示主觀需要或受責(zé)任感的驅(qū)使認(rèn)為有必要或有義務(wù)去做某事,通常譯為“必須”。t let them play with fire. 別讓他們玩火。s join the soccer 。其肯定形式為“ Let+ sb.+____________+其他.”;否定形式為“ Let+ sb.+ ________+____________+其他. /Don39。t swim here, will