跪求 词性转换（英语）

Question

We must stop some people from___(cut)down trees
We know that clean water is___(colourful)
He can't afford____(buy)this big house.
Peter faied____(swim)across the river
You put too much salt in the dish It's so _____(salt)

Answer 1

1.cutting. 介词from后用doing的形式，所以是cutting
2.colourless或者是colorless. 意思是：我们知道纯净水是无色的。
3.to buy. afford to do 或者是afford sth 意思是：他支付不起这个大房子。
4. in swimming或者是to swim .
5.salty . salt可以作为名词盐，也可以作为形容词，解释为含盐的。但这句话的意思是，你放了太多的盐在菜里，它太咸了。所以是salty。

Answer 2

1、cutting。 from是介词，后接动词ing形式
2、colourless/colorless。无色的
3、to buy。afford后要是跟动词，只能是不定式to do。
4、to swim。fail to do sth.
5、salty 。咸的（形容词）

Answer 3

cutting
noncolurful
TO BUY
TO SWIM
SALTY

Answer 4

cutting
noncolurful
buying
to swim

Answer 5

cutting not colourful to buy swimming salty
不一定对啊

Answer 6

He can't afford_to buy___(buy)this big house