The tallest man ---（weigh）222.71kg when he was 21 years old.1、He'll go out to play when he ---(finish) his homework.2、Later that day,the children _________(leave) the park,because there _________(be) something strange in it.3、I hope you ___________ (not stop) _________(study) English,because it is important _________ (learn) it well.4、It began to rain.They ___________(stop) ___________(go) home.5、She is learning ____________(drive) a car.6、She kept on

weighed（weigh后接表示质量、重量的字，它只能用主动形式，也没有进行时）
has finished（时间状语从句可用现在时或现在完成时表示将来）
left, was
don't stop, studying, to learn
stopped, to go
to drive（也可以用how to drive）
thinking, had
希望我能帮助你解疑释惑。

The tallest man ---（weigh）222.71kg when he was 21 years old.
weighs
1、He'll go out to play when he ---(finish) his homework.
finishes
2、Later that day, the children _________(leave) the park, because there _________(be) something strange in it.
left ... was...
3、I hope you ___________ (not stop) _________(study) English, because it is important _________ (learn) it well.
will not stop... studying ....to learn...
4、It began to rain. They ___________(stop) ___________(go) home.
stopped to go
5、She is learning ____________(drive) a car.
to drive
6、She kept on ____________(think) about it, but she _________(have) no idea.
thinking... had

weighed 表示【称起来达到多少】不用被动语态
finishes 主将从现
left was 信息词later，表明【一般过去时态】
will not stop sudying to learn
stopped going 停止回家这件事本身
to drive
thinking had

weighed
(据 was 可知是一般过去时）
1 finishes （ 主语是三单）
2 left , was
3 won't stopped studying ; to earn
4 stopped to go
5 to drive
6 thinking ; （ 固定用法 keep on doing sth ）
had (根据 kept 可知是过去时）
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weighed
finishes
left was
will not stop to learn
stopped to go
to drive
thinking had