Turn left off the busy First Avenue.(变为否定句）

Turn left off the busy First Avenue.(变为否定句） Turn left off the First Avenue.改为否定句 Turn left on the First Avenue.(否定句） Turn left off the busy First Avenue and enioy the quiet stre turn left off the First Avenue里的off是什么意思,是什么用法啊? Turn left off the First Avenue ahd walk[ ]a park on Center S Turn left at the bus stop.变为否定句 turn left at the first crossing .改成否定句 Don't.turn.left.First.Avenue Turn left on FIrst Avenue.怎么翻译 turn left on the first avenue and walk _______a part on cent turn left on first avenue and enjoy the city's quiet streets