I'll write to you as soon as I arrive there.
4)在动词hope, take care that, make sure that等后。
I hope they have a nice time next week.
Make sure that the windows are closed before you leave the room.
基本形式(以do为例):
主动态:do
被动态:doing;be done
过去时:did
第三人称单数形式:does
(主语为非第三人称单数)
肯定句:主语+动词原形+其他
否定句:主语+don't+动词原形+其他
一般疑问句:Do+主语+动词原形+其他?
肯定回答:Yes,+ 主语 +do
否定回答:No,+ 主语+don't
注意:do和does后要加动词原形
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