過去完成時(shí)： at that time,by then, up till then,just,yet,already,since,for
1.在過去之前：By 1980,Paul had had a lot of money.
2.兩個(gè)或兩個(gè)以上過去的事，常用一般現(xiàn)在時(shí)： Paul worked at the bank for forty years,and retired in 1980. 而突出某個(gè)具體時(shí)刻時(shí)：Paul visited India after he (had)retired.
3.改變時(shí)間順序來敘述時(shí)，先結(jié)束的要用過去完成： Paul visited India in 1980 as he had already retired.
過去完成進(jìn)行時(shí)： 用法與上相似，had been doing
1.短期性過去之前的一段時(shí)間。 He had been drinking.
2.for: He had been working at the band for ages.(已不工作了）
比較： 過去完成進(jìn)行時(shí)強(qiáng)調(diào)動(dòng)作本身，而過去完成時(shí)強(qiáng)調(diào)動(dòng)作成就。
eg： Paul had visited America twenty times. He had been planning to visit America for years.
32.impress on sb. 令sb.記住 33.break into piece 摔成碎片 34.in vain 徒然，白白地
