Unit3Weshouldobeytherules.Lesson17习题一.写出下列短语的中文意思。lookoutcrossthestreetgreenlightpicktheflowerstakecareof二.单项选择1）We________crossthestreet.A.mustB.mustn’t2）We______waitforthegreenlight.A.mustB.mustn’t3）We_______keepoffthegrass.A.mustB.mustn’t4）We_________takegoodcareofyoungchildren.A.mustB.mustn’t5）We________litter.A.mustB.mustn’t三．写出下列排列错误的单词。wiat_____sipt______lttire________pcki_______四.将下列单词排成一句话。1）must,you,for,the,wait,green,light.____________________________.2）must,off,keep,you,the,grass_______________________.3）take,of,care,must,you,good,young,children._________________________.4）mustn’t,you,litter._________________________.五.英翻汉。1.Youmustn’tcrossthestreet.__________________________2.Youmustkeepoffthegrass.__________________________3.Youmusttakegoodcareofyoungchildren.__________________________4.Youmustn’tspitontheground__________________________六.运用must和mustn’t造句。（每个两句）答案：一.写出下列短语的中文意思。注意穿越街道绿灯摘花照顾二.单项选择1）B2）A3）A4）A5）B三．写出下列排列错误的单词。waitspitlitterpick四.将下列单词排成一句话。1）Youmustwaitforthegreenlight.2）Youmustkeepoffthegrass.3）Youmusttakegoodcareofyoungchildren.4）Youmustn’tlitter.五.英翻汉。1.你不能穿越街道。2.你必须离开草坪。3.你必须照顾好小孩子。4.你不能随地吐痰。六.运用must和mustn’t造句。（每个两句）must:Youmustkeepoffthegrass.Youmustwaitforgreenlight.mustn’t:Youmustn’tpicktheflowers.Youmustn’tlitter.
