问有多少只鸟用英语怎么写

1. 数一数树上有几只鸟用英语怎么写

Count how many birds are there in the tree.（祈使句）

count是动词，意为“数”，in the tree而不是on the tree是因为树上长有叶子，而鸟儿在树叶里，所以不用on

2. 有多少只鸟他们在干什么用英语怎么说

How many birds are there? They are doing?

3. 树上有几只小鸟，英语

There are some birds in the tree
树上有几只小鸟
How many birds are there on the tree?
树上有几只小鸟？