Firemen had been fighting the forest fire for nearly three weeks before they could

相关推荐

• 新概念英语2册62课问题.1.firemen had been fighten the forest fire for nearly three weeks.意思是：消防员用了3个星期就火.帮我改成：消防员救完火后的3个星期.2.the planes had been planting seed for nearly a month.意思是：飞机用了3个星期播种.帮我改成：飞机播种完成后的3个星期.
• Firemen had been fighting the forest fire before they could get it under control.
• Firemen had been fighting the forest fire before they could get it under control.这句话里could能够换成be able
• Firemen had been fighting the forest fire before they could get it under control.这里的before是什么意思?在---之前?它引导的是不是状语从句?
• Firemen had been fighting the forest fire for nearly three weeks before they couldget it under control.请问get it under control 是词组还是什么,这是怎样搭配在一起的
• fight 和 fight with的区别是什么?请简明扼要的说明什么时候用单独的fight 什么时候用 fight with（在我看来fight 和fight with 好像没什么区别,是不是可以通用）比如新概念2第62课里面第一句fireman had been fighting the forest for nearly three weeks.这里不能用fight with么？
• Firemen had been fighting the forest fire before they could get it under control.
• Firemen had been fighting the forest fire for nearly three weeks before they could
• 如图所示，R为电阻箱，V为理想电压表，当电阻箱读数为R1=2Ω时，电压表读数为U1=4V；当电阻箱读数为R2=5Ω时，电压表读数为U2=5V．求：电源的电动势E和内阻r．
• Mr.Smith play basketball with us after school(对Mr.Smith提问）