during, for, from和since的区别

during, for, from和since

during除具备in表时间段的用法外,还可指在某一活动过程中,如:

during the night,during the fire,during the meeting。

for后接时间段的名词词组,表示行为状态持续了多久,如:

I have lived in this city for more than 10 years.

from接时间点的名词词组,表示行为或状态的起始点,而不涉及其持续时间的长短,如:

My younger sister began to learn dance from the age of five.

since接时间点的名词词组,不仅表示行为或状态的起始点,而且还强调该行为或状态从起始点一直持续到此时此刻,因而与延续性动词的现在完成时连用,如:

I have been working in this factory  since I gradeuated in 1993.

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