１）Ｓ＋Ｖi They are working hard.
（２）Ｓ＋Ｖt＋Ｏ I forgot to mail the letter yesterday.
（３）Ｓ＋Ｖt＋Ｏ＋ＯHe gave me a new bicycle .
（４）Ｓ＋Ｖi＋Ｐ He is a university student.
（５...
本人精心整理的word power 课件.内有二个flash,一个视屏。上课效果好。课堂气氛活跃。
step one talk about the story of Chang’e
step two talk about the process of space exporation
step three learn new ...
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