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in advance和ahead区别？
in advance 和 ahead? 是两个意思相近的词组，都有“提前”的意思，但是它们的用法有所不同，以下是二者的用法和区别：
1. in advance：这个词组侧重表达“预先或事先”做某事。
例句1：You have to book the tickets in advance.
你得提前订票。
例句2：Do you think I should tell her in advance that I'm a vegetarian?
你认为我应该提前告诉她我是素食主义者吗？
例句3：We had to pay the full price in advance for an escorted tour.
我们必须提前付全款，才有导游陪同。
2. ahead ：这个词组侧重表达“比原定时间提前”完成。
例句4：I finished my task 15 minutes ahead of time.
我提前15分钟完成了任务。
例句5：Tom reached school ahead of time.
汤姆提前到了学校。
例句6：We were required to enter the classroom 10 minutes ahead of time.
我们被要求提前10分钟进入教室。
in advance 还是in advanced？
in advance 释义：
adv. 预先，提前
例句：
A 10% deposit is payable in advance.
须预付10%的押金。
in advanced释义：
adv. 预先，提前
例句：
Few MacArthur Prize fellows, winners of the MacArthur Award for creative accomplishment, had good things to say about their precollegiate schooling if they had not been placed in advanced programs.
麦克亚瑟奖是为那些做出创造性成就的人设立的。那些很早就被安排参加高级课程的获奖者很少有人对大学前的教学做出正面评价。
in advance介词短语？
in advance是个介词短语，意思是"提前"，同义词是ahead of time.语法规则：介词+名词=形容词/副词,修饰名词作定语,修饰动词作状语.
例如：你最好提前把家庭作业完成.You had better finish your homework in advance.
请问，advance in做何解释啊？
In advance（时间上）在…前；预先；事先例句：a week/month/year in advance 提前一星期╱一月╱一年It's cheaper if you book the tickets in advance. 预订票要便宜一些。
advanced常见短语及意思？
常见短语以及意思如下：
in advance在前头预先, 事先
in advance of在...前面; 比...进步; 超过
make advances垫款设法接近(某人), 拉关系(向女人)献殷勤
on the advance(物价)在上涨
with the advance of随着...的增加; 随着(时间)的推移
advance on朝...前进, 向...推进; 进击
advance towards朝...前进, 向...推进; 进击
advance upon朝...前进, 向...推进; 进击特殊用法
additional advance追加垫款
all-out advance市价全面上涨
all outstanding advance全部尚未归还的放款
angular advance角度提前(量)
annual advance年进度
automatic advance自动前进[推进, 送料]
automatic spark advance自动火花提前
average advance平均进度
bank advances银行贷(出)款
cash advance现金垫款
deficiency advance预算不敷垫款
double advance前进两路
exhaust advance提前排气
export advance出口预付款[贷款]
film advance影片传送
first advance超前工作面
full advance完全提前点火
genetic advance遗传进度
