按要求改写下列句子1.Thehelicopterwasinvented(in1990)
按要求改写下列句子
1.Thehelicopterwasinvented(in1990)【对括号部分提问】
————thehelicopter——
2.Someoneturneddownthetelevisionjustnow.(改为被动语态)
Thetelevision————downjustnowbysomeone.
3.Englishisspokenasasecondlanguageinmanycountries.
People————asasecondlanguageinmanycountries.
4.Theglassisusedforkeepingwaterhot.(改为主动语态)
They——theglass——keepingwaterhot.
5.RiceisgrowninthesouthofChina.(改为一般疑问句)
——rice——inthesouthofChina?
6.Weusestampstosendletters.(改为被动语态)
Stamps——————sendingletters.