15) 肯定句變否定句及疑問句要變化的一些詞

1.some變?yōu)閍ny。如：

There are some birds in the tree.→There aren’t any birds in the tree.

但是，若在表示請(qǐng)邀請(qǐng)、請(qǐng)求的句子中，some可以不變。如：

Would you like some orange juice?

與此相關(guān)的一些不定代詞如something, somebody等也要進(jìn)行相應(yīng)變化。

2.and變?yōu)閛r。如：

I have a knife and a ruler.→I don’t have a knife or a ruler.

3.a lot of (=lots of)變?yōu)閙any或much。如：

They have a lot of friends.(可數(shù)名詞)→They don’t have many friends.

There is lots of orange in the bottle.(不可數(shù)名詞)

→There isn’t much orange in the bottle.

4.already變?yōu)閥et。如：

I have been there already.→I haven’t been there yet.