1. It‘s time for sth. 是做……的時候了。
2. It‘s time （for sb.） to do sth. 是（某人）該幹……的時候了。
3. It‘s （high） time + that從句（that可以省略，從句謂語動詞用虛擬語氣）是某人（早）該幹某事的時候了。
4. It （This / That） is the first （second， third ……） time + that從句（從句要用現在完成時）。這（那）是某人第一（二、三……）次幹某事。如主句謂語動詞是過去時，則that從句要用過去完成時。
5. by the time引導的時間狀語從句。若從句用一般現在時，主句要用將來完成時；若從句是一般過去時，主句要用過去完成時。
6. each time（每次），next time（下次）， any time（任何時候）等詞組引導的時間狀語從句。
7. the first / second / third …… time 可以引導時間狀語從句。
8.There was/is a time when+從句：曾經一度……，先前……，那時
when+從句修飾a time
今天重點舉例解說這個句型。
There was a time when Charles was coasting at school and I should have told him to buckle down.
有一段時間查爾斯在學校不太用功，我當時應該讓他加把勁的。
There was a time when each teacher spent an hour, one day a week, testing pupils in every subject
曾經，每個老師每週都有一天花上一小時對學生的每門功課進行測試。
There was a time when Liverpool players never seemed to get injured, but now they are going down like ninepins.
利物浦隊的隊員一度似乎怎麼都不會受傷，但現在一倒就倒了一片。
There is a time when I have to depend on myself for a living.
有一段時間我不得不依靠自己謀生。
There was a time when I had to depend on myself for a living.
有一段時間我不得不靠自己謀生。
注意時態的變化和呼應。
There was a time when black people were treated badly.
曾經黑人受到虐待。
類似句型還有：
It was/is a time when+從句：曾經一度……，先前……,那時
This/That was/is a time when+從句：曾經一度……，先前……,那時
It was a time when people weren't so hung-up about health
那時人們不太關注健康。
《柯林斯高階英漢雙解學習詞典》
It is a time when pop art is very much in fashion.
這是一個流行音樂成為時尚的年代。
It was a time when motorcars were rare.
那是汽車很稀有的期間。
It was a time when the tribe lived quietly in its own corner of the world.
那個時候部落寧靜地居住在世上屬於它們自己的角落裡。
It was a time when she could not bear the pain and wanted to kill herself.
她曾經無法忍受病痛，想結束自己的生命。
This was a time when you had to keep calm.
這段時間你必須保持鎮定。
This was a time when one had got to have a passbook to live in Johannesburg.
這是每個人必須有通行證才能居住在約翰內斯堡的時期
That was a time when I took a crazy liking to rock 'n' roll.
那個時候我已經開始非常狂熱地去喜歡搖滾樂。
That was a time when Michael Jackson still looked relatively handsome.
那個時候正是邁克爾傑克遜還長得比較漂亮的時候。
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