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The words and phrases: hole, large, root, seedling, cover, fill, dirt, pack, dust, storm, dirty, northern, bottom
II. Learning important and difficult points:
1) must情态动词的用法
2) be filled with
hole n.洞
We are digging a hole.
seedling n. 幼苗；秧苗
root n.根
The hole is large enough
to hold the roots of the seedling.
dirt n.泥土；污物， 不可数名词
dirty adj.肮脏的；不干净的
用泥土把洞填满
fill the hole with dirt
压实泥土
pack the dirt
dust 沙土；尘土
storm n. 暴风雨
dust storm 沙尘暴
When there is a dust storm
in spring, it gets windy and dirty everywhere.
in the bottom of the bottle
bottom 底部；最下部
Put a little water in the bottom of the hole.
hole
large
root
seedling
cover
fill