over the last 18 months 换另外一种说法?

over the last few over the last 18 months 换另外一种说法? over the weekend = last weekend over the last three years什么时态? over the last 用什么时态? over the last 50 years啥意思? over the last week什么意思 over the last seventeenth centuries的翻译 in the last few years=over the years吗 over the last year 要用什么时态 over the last two months这个时间状语中over的意思和用法? This is a summary over the last three months.中OVER甚么意思? 1.求over接一段时间的用法,比如over three days,over the last 2.as well as 是什么词性, My mom shops at the grocery store.（用last week 改写句子）My mon （）（） at the grocery store last week. They argued ( )the matter the whole afternoon ,and at last agreed ( )the date for the nextmeetingA.with,on B.on,over C.about ,on D.over,over Over the last 200 years,over harf () the trees on Earth have been cut down,填介词. the students planted over 100 trees last Sunday.同义句the students planted____ _____ 100 trees last Sunday how have gender roles changed in the United States over the last century?