when, while , as, before, after, since, until, as soon as. (1) 当主语是一般将来时或祈使句或有情态动词时.从句用一般现在时.“主将从现——青夏教育精英家教网——

摘要：when, while , as, before, after, since, until, as soon as. (1) 当主语是一般将来时或祈使句或有情态动词时.从句用一般现在时.“主将从现 I’ll ring you as soon as I get to school. 我一到学校就打电话给你. (2) 肯定句:until = till 直到 I’ll wait for you until you come back. 否定句:until = before not -. until 直到-.才-- I didn’t go to bed until I finished my homework..

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选词填空。

An accident happened ________(when, while)the plane arrived at the airport．

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选词填空。

My mother is a teacher ________(when, while)my father is a doctor．

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I'll be upset ________ someone talks to me ________ I'm reading.

A. when;while
B. while;when
C. when;when
D. while;while

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请用when, while 填空：

1. ________ May was talking on the phone, her sister walked in.

2. ________ Rita bought her new dog, it was wearing a little coat.

3. ________ I saw Carlos, he was wearing a green shirt.

4. ________ I was dancing, he was singing loudly.

5. ________ Helen came back home, her brother was watching TV.

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—______ did you become interested in playing chess?
—______ I was still a little boy, ______ the age of five years old, I began to learn it.

A. While, When, at
B. When, When, on
C. When, When, at
D. When, While, on

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