17.equally 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.