第十四个星期
第十五个星期
第十六个星期
第十七个星期和第十八个星期
第十九个星期 老师的生活和学生分享，加上课文上的生字词，课本上的故事就活起来了。
第二十个星期
第二十一个星期
第二十二个星期 上学一百天的庆典。
第二十三个星期
第二十四个星期 中国新年的庆祝，情人节紧紧在后。
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给学生自己练习天气名称和对话用的幻灯片。大家有兴趣也可以使用。 天气这个话题，我上课的习惯是天天说，不会单独成一个单元。因为学生每天来说一点，随着天气变化，这些贴身话题才能深深刻印在脑海里然后被使用。 1. 可以点击这个 链接 播放。 2. 如果想要下载更改成自己的 链接在此 ...
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Dear all, if you are reading this, you know you are one of us. Please start introduce yourself in the comment box. Until we find another w...
Relative positioning is used whenever you want to tell the printer how far it ought to move from high precision machining the current location. Send a G90 command to tell your printer to use absolute positioning, or a G91 for relative positioning. The majority of your gcode file will probably use absolute positioning, the explanation that} slicer has already decided the precise XYZ coordinates to move to. However, if you don’t know the previous place of the toolhead, otherwise you simply know that you simply want to move the head a certain distance alongside an axis, {you can use|you ought to use|you need to use} relative positioning. While G90 and G91 control the positioning mode for the X, Y, and Z axes, you may also|you can even} use M82 or M83 to set your extruder (E-axis) to absolute or relative positioning.
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