第四课时按要求完成句子。1.Thecomputerisonthedesk.(对画线部分提问) ____________________thecomputer? 2.Thecityissmall.(用tenyearsago改为一般过去时)Thecity__________smalltenyearsago. 3.Theywereatschoolyesterday.(改为否定句)____________________atschoolyesterday. 4.Theriverwascleanfiveyearsago.(改为一般疑问句并作肯定回答)__________therivercleanfiveyearsago? __________,____________________. 5.Therewasaparklastyear.(改为一般疑问句并作否定回答)____________________aparklastyear? __________,____________________. 答案：1.Whereis 2.was 3.Theyweren't4.Was;Yes,itwas5.Wasthere;No,therewasn't
