过去完成时

a moment ago

方才

Just当刚才或方才(a moment ago)解释时,英式英文用现在完成式,美式英文用简单过去式. 但ju时时态要用过去完成式,并用before, 否则他可能是两年前或三年前告诉(told)我,加两年或三年便是四

needn't

后加动词的完成式时,指过去已做了但不需做的动作

②You needn't do your homework in class. You may do it after class.... | ●needn't后加动词的完成式时,指过去已做了但不需做的动作. | ③You needn't have bought the new watch, as the old one could be repaire...

plural marriage

一夫多妻制

pluperfect 过去完成时 | plural marriage 一夫多妻制 | plural offices 兼职

present perfect continuous tense

现在完成进行时

用现在完成进行时(present perfect continuous tense)来表示某行动是始于过去,但现在仍然继续进行. 学生们往往会在上作文课的时候,问老师应该用现在时(present tense),还是过去时(past tense)来写文章. 事实上,在同一篇文章里,现在时和过去时极可能会同时出现,

present simple tense

一般现在时

过去将来完成时 past future perfect tense | 一般现在时 present simple tense | 一般过去时 past simple tense

take on a new look

焕然一新

It was the first time that +过去完成时 | 225. 焕然一新 take on a new look | 226. 心不在焉 be absent-minded

the former president

前总统

former 指"以前的"、"在前的", 如: | the former president 前总统. | long before 是"很久以前"的意思. 单独使用, 一般用在过去完成时的句子里.

told

告诉

Just当刚才或方才(a moment ago)解释时,英式英文用现在完成式,美式英文用简单过去式. 但ju时时态要用过去完成式,并用before, 否则他可能是两年前或三年前告诉(told)我,加两年或三年便是四

Experiments

实验

"实验"(experiments)只能被人做,故只能用被动语态,符合此条件的只有C,而D 构成上有误. 本句的时间状语为"before 1900",因此从时态上说选C,应当用过去完成时.

gouged out his eyes

挖出了他的双眼

the LORD had left him 主已经离开了他,过去完成时. | gouged out his eyes 挖出了他的双眼 | to grinding 锁住,

front slagging：前方除渣(熔铁炉)

"准星","front sight" | "前方除渣(熔铁炉)","front slagging" | "前弹簧","front spring"

make noise：吵闹、发出嘈杂声

85.see to照料、注意; | 86.make noise吵闹、发出嘈杂声; | 87.stare at凝视;