17.ually as 后接形容词是错误的，应该用equally+ 形容词 或者as+形容词+as.
F：The second lesson was equally as difficult as the third.
T：The second and the third lessons were equally difficult.
18. expect， suppose， think. Suppose和 think后面不跟不定 式， Expect 后面不跟名词性从句。
F：He thinks to return in May.
T：He expects to return in May.
19.farther， further. Farther 指距离； further 表示时间，程度和数量等概念。
F：Chicago is further north than Fort Worth.
T：Chicago is farther north than Fort Worth.
F：I can give you farther information about this later.
T：I can pive you further information about this later.
F：How much further did he run than she did？
T：How much farther did he run than she did？
20.few， a few， Few 有否定的含义， 意为 not many， A few 有肯定的含义， 意为 some.
F：He was so tired that he stopped playing for few minutes.
T：He was so tired that he stopped playing for a few minutes.
F：There were a few chairs left， so I had to stand up.
T：There were few chairs left， so 1 had to stand up.
21. fewer， less.fewer指可数名词；less 指价值， 程度或数额。
F：The class consists of less than fifteen students.
T：The class consists of fewer than fifteen students.
F：He spends fewer time on his studies than on his golf game.
T：He spends less time on his studies than on his golf game.
F：It is true that less girls than boys become engineers.
T：It is true that fewer girls than boys become engineers，
22.had better， would rather 后跟不带to的不定式。
F：You had better to pay attention to the details.
T：You had better pay attention to the details.
F：I had better not to play tennis this afternoon.
T：I had better not play tennis this afternoon.
