词汇

说出了病名，便不可用ail，如可以说What ails him? 和Something ails him，不可说A cold ails him。

1.aid的宾语后面接不定式或in和动名词都可以，如We aid him to do it和We aid him in doing it。

I have a very busy day ahead of me里的ahead指“在前”，就是指“以后”。

agree作“承认”解，后面可以接以that引导的从句，如I agree (with you) that the book is well worth reading。

in agony（在苦恼中）不可改作in agonies。

一般说来，用了ago不可用完成时态，如可以说She saw him a week ago，不可说She has seen him a week ago。

“侵略（性）的外交政策”该说aggressive foreign policy，“侵略战争”该说aggressive war

the aggression of...（指某国等）是“…国侵略它国”，如the aggression of Nazi Germany（纳粹德国的侵略）

1.agenda（议程）原来是复数形式，它的单数形式是agendum。但下面两点该注意：

age前面可以用at，in或of，但意思不同：

fight, strive, struggle等词后面接against和接with意思相仿，但用against着重在困难中抵抗，如We fight for the weak against the strong。

again and again和time and again是“屡次地”或“频繁地”，now and again是“有时”或“偶尔”，only now and again是“难得地”。