Ⅰ.by“到… …之前”“不迟于”仅指动作发生在限定时间之内或到某一时间为止。如:
①Can you repair my watch by Friday? 你能在星期五之前把表修好吗?(句中时间最迟到星期五,动词可以是瞬间的,也可以是持续的)
Ⅱ.till/untill“直到”强调动作的持续状态,直到将来的某一时刻为止。如:
I shall go on working till/untill next Monday. (此种情况只能用于肯定句中动词必须是延续的)
当untill与not连用时,意为“直到… …才”,主句谓语动词必须是非延续性的。如:
I don’t go to bed untill/till you come.
九年级英语下学期单元同步测试题31
Where did you go课件
What Are We Going to Do for Our Holiday课件2
Work hard课件
What Was Judy’s Old School Like课件
Where Would They Like to Go on Holiday课件1
九年级英语下学期单元同步测试题35
九年级英语下学期单元同步测试题30
九年级英语下学期单元同步测试题3
九年级英语下学期单元同步测试题32
九年级英语下学期单元同步测试题6
What Shall We Do课件1
九年级英语下学期单元同步测试题34
We’re trying to save课件2
九年级英语下学期单元同步测试题36
We’re trying to save课件4
What Are We Going to Do for Our Holiday课件1
九年级英语下学期单元同步测试题8
What Are We Going to Do for Our Holiday课件3
Detective教案3
Who Won课件
What Shall We Do课件2
Films教案1
It’s important to habits课件4
Tomorrow we will work and play课件
九年级英语下学期单元同步测试题27
Where Would They Like to Go on Holiday课件2
九年级英语下学期单元同步测试题37
What Did You Do Yesterday课件1
九年级英语下学期单元同步测试题28
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