第32页

信息发布者:
Please stay safe on the road!
You mustn't play on the road.
Will you cross the road?
What must not I do on the road?
The birds are singing happily in the tree.
A
B
C
B
A
usually
before
show
around
should
rules
crossing
road
Please stay safe on the road!
句意:
在路上请注意安全!

本句为祈使句,祈使句为动词原形开头,stay为动词原形,stay safe保持安全,后跟状语on the road在路上,please放句首或句尾都可,放句尾需用逗号隔开,故填:Please stay safe on the road!。
You mustn't play on the road.
句意:
你必须在马路上玩。

含有情态动词must的陈述句,改为否定句,直接在must后加not,缩写为mustn't,其他不变。
Will you cross the road?
句意:
我将会过马路。

含有情态动词will的陈述句改为一般疑问句,直接将will放句首,I变you,其他不变。
What must not I do on the road?
句意:
你不能在路上阅读。

画线部分意思是阅读,可知问的是做什么,用What提问,后跟情态动词must not,you变I,后跟do表示做,再接on the road。
The birds are singing happily in the tree.
句意:
鸟儿在树上快乐地歌唱。

含有实义动词的陈述句,The birds为主语,时态为现在进行时,谓语为are singing,后跟副词happily修饰动词,再接状语in the tree。