改变这些英语句子的形式.A snowman is made by us.改成:1._____________(simple past tense)2._____________(present progressive tense)3._____________(present perfect tense)4._____________(future tense)
问题描述：
改变这些英语句子的形式.
A snowman is made by us.
改成:
1._____________(simple past tense)
2._____________(present progressive tense)
3._____________(present perfect tense)
4._____________(future tense)
答
1.A snowman was made by us. (simple past tense)
2.A snowman is being made by us. (present progressive tense)
3.A snowman has been made by us. (present perfect tense)
4.A snowman is going to be made by us. (future tense)
答
A snowman was made by us.
A snowman is being made by us.
A snowman has been made by us.
A snowman will be made by us.