I
if
［誤］ If it will rain I won‘t go to school tomorrow.
�。壅� If it rains I won‘t go to school tomorrow.
�。畚觯� 由if引起的狀語從句要用一般時表示將來。
［誤］ I want to know if he comes here tomorrow.
�。壅� I want to know if he will come here tomorrow.
［析］ if所引起的如果是賓語從句則不能用一般現(xiàn)在時表示將來。
�。壅`］ I want to know if it will rain tomorrow he will come or not.
�。壅� I want to know if it rains tomorrow he will come or not.
�。畚觯� 這里的if從句是整個賓語從句的條件狀語，所以，還應(yīng)用一般時表示將來。
ill
［誤］ He spent many years looking after his ill father.
�。壅� He spent many years looking after his sick father.
［析］ ill和sick都可以作表語，如： I‘m ill (sick). 美國英語中常用sick， 而英國英語中兩者都可用，但ill一般不作定語。
in
�。壅`］ In a cold morning, I went to school alone.
�。壅� On a cold morning, I went to school alone.
［析］ 在in the morning或in the afternoon詞組中，不論在這兩個名詞的前或后加任何修飾詞，其介詞in都要變?yōu)閛n.
�。壅`］ I will finish it after two days.
�。壅� I will finish it in two days.
�。畚觯� 中文中幾天以后可以完成，或幾天后來取，在譯為英文時都不要用after，而要用in.如： He will be back in a few days.
in into
作為副詞應(yīng)用in，而不能用into，如： Come in, please. 又若在句中不涉及到動詞的位置，只是表達(dá)空間的位置時用in，如： The teacher in the office is my mother. 但在go, run, come, walk, dive等詞后則要用into. 如： She dives into the river.
instead
［誤］ The boy stayed in bed all day instead to go to school.
�。壅� The boy stayed in bed all day instead of going to school.
［析］ instead of其后要接動名詞、名詞或代詞，而不能用不定式，如： I choose this book instead of that one.
�。壅`］ The beer here is not good, so I drink wine instead of it.
�。壅� The beer here is not good, so I drink wine instead.
［析］ instead是副詞，而instead of是介詞短語。如： If you are not free, you may come another day instead.
