1. I have studied English for 9 years up to now.

2. I studied in a junior high school in my village for 4 years and I study in a senor high school.

3.By the end of last year, I had studied English for 10 years.

4.现在完成时常用时间状语

So far , lately, recently, in the past/last few years/days since then/1990 ever since up to now, already, yet.

例句： There have been great changes taking place in our school since 2002.

This/ It is the first time that I have come here.

5.一般过去时常用时间状语

Yesterday\ last night/year/week \in the past\the other day\the day before yesterday\

At that time \ ago\ once upon a time\ in 1972\from 2000 to 2003\ between…and …\

6. 过去完成时常用时间状语

By then\ by that time\ until\ by the end of\before 2000\by the time\ no soonor…than或者hardly…when..一。。。就。。。\

It was the first time that I had passed the exam.

He said that he had learned 3000 English words.

If he had studied hard last term, he would have passed the exam.

He wishes that he had focused on study in his teens.

He had hoped to go home but an old friend of his came.